Cassie Armstrong – Editor

I'm a book editor and writing coach with more than nineteen years of editorial experience, including work on two award-winning trade books. I specialize in children's books, cookbooks, and craft books. I help writers strengthen structure, clarity, and reader experience through manuscript evaluations, coaching, copyediting, and proofreading.

My background as a teacher shapes every project. I don't simply identify problems—I help writers understand what's working, what needs attention, and why. I work with independent authors and publishers, providing clear, thoughtful feedback designed to strengthen both the manuscript and the writer.

Here’s what authors and publishers say about working with me:

"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. "

—Izzy Laing, Author of Lavender Plant and the Two Naughty Fairies

"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."

—Donna Gregory, Children's Editor, Arcturus Publishing

"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."

—Stephanie McCoy, Author of My Own Two Feet

"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."

—Lydia Inglett, Publisher and CEO, Lydia Inglett Ltd Publishing