The problems that stop books at the printer, answered plainly.
Fifteen years of preparing print files for KDP, IngramSpark, and Lulu, written down. Real numbers, real rejection messages, honest tool reviews, from the team behind BookDesignTemplates.com (70,000+ authors served).
The rejection room
IngramSpark rejected your cover file? Here is exactly why, and the fix
"COVER LAYOUT SUBMITTED IS NOT BUILT TO THE CORRECT SPECIFICATIONS" decoded: the template math, the case laminate formulas, and the step-by-step path to an accepted file.
KDP rejected your cover? Every error, decoded
The exact KDP full-wrap math (bleed, spine, safe zones, barcode) and the fix for every common cover rejection.
KDP Print Previewer errors: margins, gutter, and bleed, explained
Why the previewer flags your Word document, the actual margin tables by page count, and how to fix each error for good.
Your book is stuck "In Review": what's normal, what's not, what to do
How long KDP and IngramSpark review really takes, what triggers a longer manual review, and the calm, correct steps.
Updating a published book without losing your reviews
Which edits keep your reviews and ASIN, which ones mint a new edition at zero, plus the safe-update checklist.
Covers
Book spine width: the real formulas for KDP, IngramSpark, and Lulu
The published multipliers, the hardcover case laminate table we measured from IngramSpark's own generator, and the spine text rules.
What a book cover really costs in 2026 (every route, real numbers)
Premades, Fiverr, contests, and $880-average pro freelancers, including the print-wrap and per-vendor add-ons nobody quotes up front.
Why Canva book covers get rejected (and when Canva is actually fine)
96 DPI exports, Pro-only CMYK, no PDF/X-1a, and manual spine math: exactly where Canva fails at the printer and where it shines.
Fiverr book covers: what the $5 gig actually delivers
Add-on stacking, stolen portfolios, and unlicensed stock, plus how to vet a seller if you go that route anyway.
AI book covers in 2026: disclosure rules, copyright, and the backlash, honestly
KDP disclosure, what the Copyright Office will register, and the reader backlash, from a company that uses AI art openly and engineers the other 90 percent.
Interiors & the craft
What Trim Size Should Your Book Be? The Honest Genre Guide
A genre-by-genre guide to choosing your trim size, why 6x9 is the safe US standard, and how a smaller trim quietly raises your print cost.
Formatting a book in Microsoft Word: the complete honest guide
Exact trim, the gutter table, styles, section breaks, page numbers, a working TOC, embedded fonts, and the honest catch about reflow.
Why does my book look self-published? The 10 tells designers see instantly
The ten formatting habits that mark an interior as amateur at a glance, each with the exact fix.
What fonts do real books use? Body text, sizes, and the classics
The classic reading serifs, typical sizes and leading, what large print really means, and why embedding rights matter.
The copyright page: what goes on it (copy-paste template included)
Every element a copyright page needs plus a clean fill-in template.
Tools, honestly reviewed
The four ways to format a book in 2026: software, templates, freelancers, or done-for-you
The umbrella decision guide: honest cost, time, control, and skill trade-offs across every route, with a full review linked for each.
BookDesigner.ai vs Vellum (2026): buy the software or hire the designer?
Vellum's beautiful one-time-purchase output against a done-for-you service that also handles the cover and marketing. Who should buy which.
BookDesigner.ai vs Atticus (2026): the cross-platform tool or the done-for-you service?
Atticus's affordable all-in-one app against a per-book service, the DIY-time wedge, and who should pick each.
Draft2Digital's free formatting: an honest review (and when you need more)
What the free, template-based conversion does genuinely well, its real limits, and when a book needs real design or a press-ready print package.
Vellum vs Atticus vs hiring it done: the honest 2026 comparison
Two tools you operate versus a designer you hire: price, platform, learning curve, and who owns a printer rejection.
Vellum review 2026: honest pros, cons, and what Mac-only really means
Polished output and a one-time price against the real limits: Mac-only, around eight styles, no complex tables or footnote-heavy layouts.
Atticus review 2026: the bugs, the wins, and who it actually fits
Cross-platform and half Vellum's price, weighed against the documented export freezes and sync hiccups authors report.
Do you need InDesign to format a book? (Honest answer: probably not)
The professional standard is overkill for most authors: the subscription, the learning curve, and the painful EPUB export.
Money & decisions
How much does it cost to self-publish a book? Honest 2026 numbers
Line-by-line real ranges, from scrappy DIY under $200 to full-service $5,000+.
Self-publishing steps in order: the master checklist
The complete 15-step path from finished draft to your first 30 days on sale, with the classic mistake at each step.
KDP vs IngramSpark file requirements: what actually differs
Interiors mostly transfer; covers never do. The side-by-side table and the free-ISBN trap.
ISBNs for self-publishers: free vs bought, and the traps
The free-ISBN lock, Bowker pricing, per-format ISBNs, and the case-sensitive imprint trap.
How to write back-cover copy that sells (formulas by genre)
The three-part skeleton, fiction vs nonfiction formulas, and two fill-in-the-blank templates.
Vanity press red flags: the documented playbook
The model, the documented patterns, and the watchdog desks to check any company against before you pay.