5 Common Manuscript Mistakes That Make Your Book Look Unprofessional (And How to Fix Them)
You’ve poured your heart into writing your book, but small formatting and structural mistakes can make even the most compelling story look amateurish. The good news? These issues are easy to fix once you know what to look for. Here are five common manuscript mistakes that instantly signal “unprofessional” to readers—and how to correct them before you publish.
1. Inconsistent Formatting Throughout
The Mistake: Switching between single and double spacing, using different fonts for chapter headings, or having inconsistent indentation creates a disjointed reading experience that screams “unedited.”
The Fix: Create a style guide for your manuscript and stick to it. Use the same font throughout (11-12pt for body text), consistent paragraph spacing, and uniform chapter heading styles. Most importantly, use your word processor’s “Styles” feature rather than manually formatting each section. This ensures consistency and makes future edits much easier.
Pro Tip: Print out a few random pages from different sections of your book. If they don’t look like they belong to the same book, you have a consistency problem.
2. Double Spaces After Periods
The Mistake: Many writers learned to type with two spaces after periods on old typewriters. While this was necessary for monospaced fonts, modern proportional fonts make double spacing look awkward and dated.
The Fix: Use your word processor’s “Find and Replace” function to search for two spaces and replace them with one. In Microsoft Word, type two spaces in the “Find” field and one space in the “Replace” field, then click “Replace All.” This takes seconds and instantly modernizes your manuscript.
3. Improper Dialogue Formatting
The Mistake: Incorrect punctuation in dialogue is one of the fastest ways to lose reader trust. Common errors include placing periods outside quotation marks, starting new paragraphs mid-dialogue, or forgetting to start a new paragraph when speakers change.
The Fix: Follow these basic rules: Commas and periods always go inside quotation marks. Start a new paragraph every time the speaker changes. Use em dashes (—) without spaces for interrupted dialogue, and ellipses (…) for trailing off. Study dialogue formatting in professionally published books in your genre and mirror that style.
Example: Wrong: “I don’t think so”. She said. Right: “I don’t think so,” she said.
4. Overuse of Italics, Bold, and ALL CAPS for Emphasis
The Mistake: Using multiple formatting tricks to emphasize words makes your writing look desperate and unprofessional. Excessive formatting is the written equivalent of someone shouting at you.
The Fix: Let your words carry the weight. Strong verbs and precise language create emphasis naturally. When you must emphasize something, italics alone are sufficient—and use them sparingly. Reserve ALL CAPS for acronyms only, and avoid bold text in narrative fiction entirely.
5. Missing or Improperly Formatted Front and Back Matter
The Mistake: Jumping straight into Chapter 1 without a title page, copyright page, or table of contents (for nonfiction) makes your book look incomplete. Similarly, ending abruptly without an “About the Author” section wastes valuable marketing space.
The Fix: Include these essential elements:
- Title page with book title, subtitle, and author name
- Copyright page with publication year, copyright notice, and ISBN
- Table of contents (for nonfiction)
- “About the Author” page at the end
- “Other Books by [Author Name]” section, if applicable
Professional formatting isn’t about perfection—it’s about showing respect for your readers and your craft. Taking time to fix these common mistakes signals that you’re serious about your work, which makes readers take your book seriously too.
Need help ensuring your manuscript meets professional standards? We can help yours shine! Contact us to find out more!