What copyediting actually covers
Copyediting addresses the correctness layer of your manuscript: grammar, punctuation, spelling, capitalization, hyphenation, and adherence to your chosen style guide. It also covers internal consistency: are character names spelled the same way throughout? Does the timeline hold? Do physical details remain consistent across chapters? And it includes light fact-checking of verifiable claims. Copyediting does not improve prose style or address structural issues. That is what line editing and developmental editing are for.
The style sheet: your copyeditor's main deliverable
When a copyeditor finishes your manuscript, they should deliver two things: the edited manuscript with tracked changes, and a style sheet. The style sheet is a document that records every consistency decision made during the edit: how place names are capitalized, which words are hyphenated, how invented terminology is rendered, and any deliberate departures from CMOS. It is not a bonus; it is essential. If you ever revise the book, hire a new editor for the sequel, or send the manuscript to a layout designer, the style sheet travels with it.
CMOS vs. AP: which one your novel follows
Fiction publishers use the Chicago Manual of Style (CMOS) as the standard. AP style governs journalism. The practical differences matter: CMOS uses serial commas; AP traditionally does not. CMOS spells out numbers up to one hundred; AP cuts off at nine. CMOS handles dialogue punctuation differently from AP. If you are self-publishing, tell your copyeditor to follow CMOS 17 (current edition) unless you specify otherwise, and flag any personal preferences upfront so they are recorded on the style sheet.
Where copyediting fits in the workflow
Copyediting comes after developmental editing and line editing, and before layout. The sequence exists for a reason: there is no point correcting the grammar in a scene you are about to cut during developmental editing. Copyediting the final manuscript, after all structural and prose-quality decisions have been made, ensures the corrections stick. After layout, only proofreading remains, and proofreading checks the formatted proof, not the manuscript.
How to evaluate a sample edit before committing
Always request a sample edit on the first 10 pages of your manuscript before hiring a copyeditor for the full project. What to look for: Are the corrections accurate? Are they based on the style guide you specified? Does the editor explain unusual changes with comments? Do they correct genuine errors, or are they changing things that were correct to begin with? An editor who silently rewrites your intentional choices, or who misses obvious errors, reveals their working method in the sample. It is much cheaper to discover this before the full engagement.
Building your own style sheet for a series
If you write a series, build your own style sheet before the first book goes to a copyeditor. Document: character names and titles, place names and their capitalization, invented terminology, timeline notes, and any stylistic preferences that differ from standard CMOS. Share this with every editor and layout designer who touches the series. Consistency across books builds reader trust; inconsistency across books generates reviews that mention errors. A two-page style sheet created before book one is worth more than ten rounds of corrections across a five-book series.
