Skip to content
Join Waitlist
Back to the blog

August 21, 2026

From finished manuscript to retailer-ready in 7 steps

You type "The End" on your manuscript, picture birds circling in Cinderella fashion, and float around your kitchen fetching your favorite drink, humming and blissfully unaware of what is happening in the world. You've finished your book!

But "finished" means two different things. The first is that the story is done. The second is that a retailer will accept the files and a reader will get a book that looks like it was made on purpose.

So you're not finished; at least, not yet. But let's relish that moment a little bit longer...

The distance between them is shorter than it seems, and it is almost entirely a checklist. To help you on your path to publishing, here is the whole of it in seven steps, in the order that keeps you from redoing work.

1. Structural pass and a clean chapter structure

Do this before any sentence-level work, because a structural change throws away line edits.

Read the whole draft at once out loud, or as close to it as you can manage, taking notes rather than fixing anything. You are looking at shape: does the story start where the story starts, does each chapter move something, does the ending pay off what the opening set up.

Then fix it. Cut chapters that only exist to relay information, merge halves of scenes that are really one scene, and move any chapter that is in the wrong place.

When that settles, normalize the structure itself:

That last group matters more than it sounds. Formatting software builds the table of contents and the running heads from your structure, so a chapter that is really two chapters in one file will produce a wrong contents page in every format you export. Calamus picks up on your formatting within your Editor so it becomes easier to put your book together properly when you're ready.

A scene of The Ferryman's Debt in the Calamus editor: the bar above it showing Chapter 4, The East Bank, the scene The River marked Final Copy at 2,015 of 2,000 words, and the book at 6 chapters, 31 scenes, 30 of them final copy, 30,842 of 22,200 words

2. Line edit and proofread

These are two passes, not one, and running them together means you will miss things in both.

The line edit is about how sentences work: rhythm, clarity, repeated constructions, dialogue that all sounds like the same person, filter words ("she saw that", "he felt"), and paragraphs that begin the same way five times in a row.

The proofread is about correctness: spelling, punctuation, continuity of names and details, consistent capitalization of invented terms, consistent treatment of numbers, dates and time.

Here are two mechanical helps. Read the proof pass in a different medium from the one you drafted in, on paper or on a phone, because a changed layout makes your eye stop skipping. And build a style sheet as you go: serial comma yes or no, how you spell the fictional city (use the World builder in Calamus to help you stay consistent), whether it is "all right" or "alright". You will need that list again for book two.

If you can afford a professional copyeditor for one pass, this is the one to buy.

3. Front and back matter

This is the part most first books under-build, and it costs nothing but a little bit of time to do properly.

Front matter, in the usual order:

Back matter earns its place commercially:

Set the ISBN correctly for each format. Print and ebook take separate numbers, and if you sell a wide EPUB and a retailer-specific one, those can differ too.

4. Choose a trim size and set your margins

Trim size is the finished page dimension. Pick it before you format anything, because every margin decision depends on it.

Common fiction trims, in inches:

Check that your chosen trim is offered by every retailer you plan to use before you commit.

Then margins. Outside, top and bottom margins are a design choice; 0.5 inch is a workable floor and 0.75 inch reads more comfortably. The gutter is the extra inner margin that compensates for the part of the page swallowed by the spine, and it scales with page count because a thicker book does not open as flat.

Typical minimums for book binding:

Set mirrored margins so the gutter falls on the correct side of each page. Then set body type: 10.5 to 12 point for most serif faces, line spacing around 1.2 to 1.4 times the type size, and a first-line indent of roughly one em, with no indent on the first paragraph of a chapter or after a scene break.

5. Build the EPUB and validate it

Export the ebook and then check it, in that order, with two separate kinds of checking.

The machine check is EPUBCheck, the open source validator maintained under W3C. It reads the file against the EPUB specification and reports errors and warnings with line numbers. Retailers run their own checks on ingest, so anything it flags is worth fixing first. Errors are blocking; warnings are usually a minute of work and worth clearing anyway.

The human check is reading the entire ebook, which always amazes us because we find typos even at that moment of review! Open the EPUB on an actual e-reader and on a phone, and look at:

Change the device font size to the largest setting and read one chapter that way. Anything laid out with hard spaces or manual line breaks will break there and nowhere else.

6. Build the print PDF with embedded fonts at the right trim

The print file is a different build with different requirements.

It has to be at the exact trim size, page for page, with the gutter applied. Every font has to be embedded in the file, because the printer does not have your fonts; check this in the PDF's document properties under Fonts, where each entry should say Embedded or Embedded Subset. Images need to be at print resolution, 300 dpi at their placed size, in grayscale if the interior is black and white.

Then read the PDF as a printed object:

Compile in Calamus produces the EPUB, the print PDF at real trim sizes, DOCX and Markdown from one manuscript, so a structural change in step 1 does not mean rebuilding a separate typesetting file from scratch.

7. Upload, check the previewer, order a proof

Upload both files and use the retailer's own previewer, which renders the file the way that retailer's pipeline does. Page through the whole book, not just the first chapter. This is where you catch a contents entry pointing at the wrong anchor, or a cover at the wrong aspect ratio.

Then order a physical proof. Nothing on a screen tells you the weight of the paper, how dark the ink sits, whether the gutter is generous enough to read without cracking the spine, or whether your body type is a size too small. Read the first chapter and the last, then flip through every page looking only at the shape of the page.

Approve after that, not before.

Working the list

None of these steps is difficult. The cost is in moving between tools, because a fix in step 1 sends you back through steps 5 and 6 in whatever app built the files. Our solution with Calamus is to keep everything you need to do with your book in one software application.

Keeping the manuscript, the structure, the world reference and the output in one writing suite means a late structural change costs a rebuild rather than a re-import. If you want to work through this list on a real book before deciding anything, the 14-day trial runs the whole app, with Compile locked and your files still downloading. Calamus is $189 once, with updates included, and the overview of what it does covers the arc from the first idea to a book on sale.

Chad & Melody

Co-founders of Calamus

The Calamus Team

Ideas, Writing, Creative Vibing, Compiling, and Marketing: One Tool.

Calamus is in Beta testing; join the waitlist, learn about how Calamus will help you grow as a writer, and be the first to know when you can start writing and publishing with Calamus.