This document provides guidelines for designing a fictional book cover, including dividing the cover into sections (front, spine, back, flaps), choosing standard book measurements, and including key elements in each section. It discusses using warm and cool colors intentionally based on their psychological effects on readers. It emphasizes simplicity in design per Ockham's Razor and stripping away unnecessary elements. The front cover should attract readers' attention with title, author, and short sales pitch. The spine should include title and author. The back cover for fiction books should include an excerpt and plot synopsis to convince readers to purchase, while nonfiction includes topic details. An author bio is also typically included.