Testimonials

Fantasy author Sarah Zimm

THE WHISPERS OF DUST AND DARKNESS series

“J Mercer’s masterful understanding of the craft, and her deep care for the integrity and vision of the story, truly helped elevate my first novel. Every revision and suggestion she made helped scenes read clearer and land even better. As I worked my way through edits, which included detailed notes and a wealth of knowledge, I felt myself growing in my own craft. Working with Joanna will not only make your story as polished as it can possibly be; it will make you a better writer.”

Fantasy author Rhiannon Rollness

BLACK AND BLUE WIDOW

“Mercer’s editorial letter and in-line comments gave me the second set of eyes I needed to see both big picture issues in character development, plot points, and pacing, as well as minute details such as word choice and areas of confusion. Not only was her feedback helpful and insightful, but she balanced it beautifully with encouragement that made me want to dive back into my manuscript and make it even better! Thank you!”

Romance author Georgina North

THE GENTLEMAN SPY and PAINTING THE DUKE

“I turned to Joanna for developmental edits on my first ever novel. The whole experience was seamless, collaborative, and every step of the way I felt heard. Joanna is incredibly kind, knowledgeable, and her feedback is insightful and given with a deep understanding and care for the integrity of the story.”

Mystery romance author Erica Wynters

The CAMELOT FLOWERS series and more

“Not only were your words so encouraging, but your feedback was SO helpful!! I kept saying to myself – that’s an amazing idea! or Yes! That would be such a great scene to add! Your critique was so well thought out and helpful and I am so appreciative. I can’t wait to dive in and work on some of these scenes!”

Young adult author Jeff Schill

THE KID

“I just wanted to thank you again for all you did for this story and how you challenged me to think differently about this book. I love your insight and your ability to pick out large themes as well as small details.”

Middle grade author Karla Manternach

The MEENA ZEE series

“Mercer is a skilled writer with a keen editorial eye. She reads deeply, and her feedback is both astute and kind. I’ve relied on her insights for several of my manuscripts, and she’s always helped me to enhance what was working, pinpoint missteps, and identify areas that were ripe for improvement.”