The book design is part of the story, too. The book design needs to work with the text to create a cohesive reading experience. The cover, spine, and back matter are all crucial elements that authors sell their books. And yet you, dear readers, are much more than passive consumers of text. You are active participants in the story and want to feel like you’re part of it. That’s why book design is so important — it helps readers become immersed in the story.