Clear, confident, publish-ready manuscripts—for authors who take their work seriously.
Editing and coaching for children’s books, cookbooks, and craft books
I’m Cassie Armstrong, owner of MorningStar Editing LLC. I combine professional editing with the heart of a teacher and the insight of a coach—so you don’t just get corrections, you gain clarity, direction, and confidence in your work.
I help children’s authors and nonfiction creators turn promising drafts into clear, engaging, publish-ready books. I work with career-focused authors who want their books to truly serve their readers and stand out in today’s competitive marketplace.
As the editor of two award-winning trade books, I bring a deep respect for audience, structure, and revision to every project. Together, we’ll strengthen what’s already working, address what’s holding the manuscript back, and shape a book you can be proud to publish.
Let’s talk about your book—and what it needs to be clear, confident, and ready for publishing.
MorningStar Editing
MorningStar Editing
MorningStar Editing
MorningStar Editing
MorningStar Editing
About Us
Hi, I’m Cassie Armstrong—writing coach, book editor, and owner of MorningStar Editing LLC. I help writers clearly understand their work and shape books with intention, clarity, and respect for the reader.
I work with authors to create clear, engaging, publish-ready books that truly serve their audience. From children’s literature to craft and how-to books to cookbooks meant to be used and loved, I partner with career-focused writers who care deeply about their work and want their books to stand out in today’s marketplace.
I’ve had the privilege of editing two award-winning trade books, Daisy Cakes and South, and I bring those lessons to every manuscript I work on. My focus is helping you see what’s working, what could be stronger, and—just as importantly—why those changes matter, so your book does exactly what it’s meant to do.
Books aren’t finished simply because they’ve been revised; they’re finished when they clearly communicate with the right audience. I approach every manuscript with care, honesty, and respect, honoring your voice while guiding you toward a book you can share with confidence….
Testimonials
“I am a new author starting my writing career later than most, and I’m transitioning from a completely unrelated profession. I needed an editor who would not only provide a full line and /or developmental edit of my manuscript, but who would also be willing to coach me while I learn the business and develop my craft. Cassie was referred to me by another editor who does not work in children’s literature. She described Cassie as being 'smart and supportive' and could not have been more accurate!
“Cassie was extremely responsive and communicated openly about what our mutual expectations should be and what she is able to provide in both her editing and coaching services. Her editing was professional, timely, and at a fair price. But her coaching is what I am most excited about and where our relationship is growing. Cassie recommended that I begin by sending out my manuscript to beta readers and try to schedule some school visits. This is something I had not considered at this stage in my writing, but the feedback I am getting has already been very beneficial. Last week I had my first classroom visit at her suggestion and it was a great experience!
“Cassie also recommended that I set up a website and social media as soon as possible. I am currently working on my website and email set up, and I’ve already had a mini photo session with a photographer friend so that I have a few images to start with on my social media pages. Cassie is helping me figure out which social media outlets would be most beneficial for my audience, specifically my genre and the age group of my readers.
“I very much appreciate that Cassie is direct in her suggestions and detail oriented, as this is how I learn best. She is teaching me so much about how to attract and engage with my readers, and there is no way I would have made this much progress so quickly without her guidance. I am very excited about continuing to work with Cassie as I develop not only as a writer, but as I establish my business as an author. I would highly recommend her, especially for new writers who need guidance in this profession.”
“My experience with Cassie Armstrong was extremely positive and unparallel to working with any other editor. Cassie epitomizes professionalism; her process from contract inception to completion is well thought out, well documented and clear. Further, given I am a fairly new author who feeds off and grows with every edit from my pen or another, I found her approach of providing clarifying, comprehensive, overall feedback independent from the manuscript editorial redline comments, to be uniquely supportive.Cassie’s attention to detail is meticulous, her criticism was always meaningful, constructive, and instructive, and her work ethic left me confident that my work product had received an expert review. Moreover, her turnaround time was fast - which I appreciated! I unequivocally endorse Cassie Armstrong for your editing needs and I will certainly seek to work with her again very soon!”
"As well as being a very accurate and flexible editor and proofreader, Cassie is a delight to work with. I can’t recommend her highly enough."
"I’m really pleased I chose Cassie to edit my book. She recommended sensible changes, gave good explanations of why she edited, edited in a way that still allowed my writing style to flow, and picked up errors that I hadn’t noticed while doing my own pre-editing. She is friendly and approachable, as well as professional. The editing process worked well despite being in another country. I look forward to working with her in the future."
"Cassie is a great communicator and helped me understand the many aspects of editing and proofreading. She is very professional, intelligent, and courteous. She went above and beyond and helped me with an issue even after completing my project. I cannot recommend her enough."
“Cassie Armstrong is an excellent editor—quick, reliable, and efficient. She Americanized some UK products for us & came up with some creative solutions to some tricky UK/US cookery conundrums."
"Cassie’s editing and communication style make her an easy fit in today’s complex book projects. She is accurate and succinct. An all-around pleasure to work with."
“As a first-time author, I found Cassie to be an invaluable resource on many levels. Her assistance with, and insight regarding, the editing process of my story was informative and very professionally presented. Suggestions she made about changes and updates were supported with information that helped validate those changes. In addition to her professional duties, Cassie served as a writing coach and provided encouragement when it was needed throughout the process.”
“My experience with Cassie Armstrong was extremely positive and unparallel to working with any other editor. Cassie epitomizes professionalism; her process from contract inception to completion is well thought out, well documented and clear. Further, given I am a fairly new author who feeds off and grows with every edit from my pen or another, I found her approach of providing clarifying, comprehensive, overall feedback independent from the manuscript editorial redline comments, to be uniquely supportive.Cassie’s attention to detail is meticulous, her criticism was always meaningful, constructive, and instructive, and her work ethic left me confident that my work product had received an expert review. Moreover, her turnaround time was fast - which I appreciated! I unequivocally endorse Cassie Armstrong for your editing needs and I will certainly seek to work with her again very soon!”
"As well as being a very accurate and flexible editor and proofreader, Cassie is a delight to work with. I can’t recommend her highly enough."
"I’m really pleased I chose Cassie to edit my book. She recommended sensible changes, gave good explanations of why she edited, edited in a way that still allowed my writing style to flow, and picked up errors that I hadn’t noticed while doing my own pre-editing. She is friendly and approachable, as well as professional. The editing process worked well despite being in another country. I look forward to working with her in the future."
"Cassie is a great communicator and helped me understand the many aspects of editing and proofreading. She is very professional, intelligent, and courteous. She went above and beyond and helped me with an issue even after completing my project. I cannot recommend her enough."
“Cassie Armstrong is an excellent editor—quick, reliable, and efficient. She Americanized some UK products for us & came up with some creative solutions to some tricky UK/US cookery conundrums."
"Cassie’s editing and communication style make her an easy fit in today’s complex book projects. She is accurate and succinct. An all-around pleasure to work with."
“As a first-time author, I found Cassie to be an invaluable resource on many levels. Her assistance with, and insight regarding, the editing process of my story was informative and very professionally presented. Suggestions she made about changes and updates were supported with information that helped validate those changes. In addition to her professional duties, Cassie served as a writing coach and provided encouragement when it was needed throughout the process.”
“Cassie was extremely responsive and communicated openly about what our mutual expectations should be and what she is able to provide in both her editing and coaching services. Her editing was professional, timely, and at a fair price. But her coaching is what I am most excited about and where our relationship is growing. Cassie recommended that I begin by sending out my manuscript to beta readers and try to schedule some school visits. This is something I had not considered at this stage in my writing, but the feedback I am getting has already been very beneficial. Last week I had my first classroom visit at her suggestion and it was a great experience!
“Cassie also recommended that I set up a website and social media as soon as possible. I am currently working on my website and email set up, and I’ve already had a mini photo session with a photographer friend so that I have a few images to start with on my social media pages. Cassie is helping me figure out which social media outlets would be most beneficial for my audience, specifically my genre and the age group of my readers.
“I very much appreciate that Cassie is direct in her suggestions and detail oriented, as this is how I learn best. She is teaching me so much about how to attract and engage with my readers, and there is no way I would have made this much progress so quickly without her guidance. I am very excited about continuing to work with Cassie as I develop not only as a writer, but as I establish my business as an author. I would highly recommend her, especially for new writers who need guidance in this profession.”
OUR PORTFOLIO
The following lists include a select few of the genres and titles I’ve edited. I’m happy to share more of the titles and genres with you if you’re interested or if requested.
Children’s Books
- 79 Amazing Science Games to Blow Your Mind by Anna Claybourne
- Catching Jordan by Miranda Kenneally
- Curtis Gets Ready to Dream by Catrina Stiller
- Epic Myths for Fearless Girls by Claudia Martin
- Escape Room Adventures Sherlock Holmes Greatest Case by Alex Woolf
- Just Don’t Mention It by Estelle Maskame
- Kyrie’s School Blues by S. P. Brown
- Lavender Plant and the Two Naughty Fairies by Izzy Laing
- Lexie’s Little Lie by Emma Shevah
- My Own Two Feet by Stephanie McCoy
- Princesses Don’t Wear Glasses by Tia Cherie Dammen
- Snowball the Baby Yeti by Melody Lockhart
- The Day the Calf Ate the Chocolate Cake by Rachel Campbell Deddens
- The Last to Die by Kelly Garrett
- Treasury of Fairy Tales by Claire Philip........
CONTACT US
Phone: 719-494-6674
Email: cassie@morningstareditingllc.com