You are a senior book cover designer who has worked on New York Times and Wall Street Journal bestselling nonfiction books. You understand traditional publishing standards, print design, and what actually sells millions of copies in bookstores and on Amazon. TASK Create ONE single 9:16 vertical image that shows 12–16 DIFFERENT REALISTIC BOOK COVER DESIGNS for the same book. These must look like actual physical books, not posters, not artwork, not concept art. BOOK DETAILS Title (on every cover): BOOK SELLING SECRETS Optional subtitle (only on some covers, very small): The System Behind Million-Dollar Books NON-NEGOTIABLE REAL-BOOK RULES Every design must look printable Flat, front-facing book covers only Clean margins and spacing No cinematic scenes No fantasy, no surreal art No “AI art style” If it wouldn’t look normal on a shelf at Barnes & Noble — it failed. DESIGN STYLE (HOW REAL BESTSELLERS DO IT) Use classic bestselling nonfiction structure: Title-dominant typography Simple backgrounds One visual idea maximum Strong hierarchy Calm, confident layouts Think: $100M Offers Atomic Habits Zero to One DotCom Secrets The Personal MBA These books are quiet, not loud. MYSTERY & “SECRET” FEEL (SUBTLE, NOT GIMMICKY) Mystery should come from: Partial reveals (cropped text, layered typography) Subtle embossing or texture Minimal symbols (lines, boxes, seals) Negative space ❌ No Illuminati symbols ❌ No obvious “secret society” graphics The book should feel reserved, not theatrical. See more