Apart from the font you choose — and the prime function of fonts in your book is to make reading easy — the interior of your book can be rather dull. The emphasis is not on the design, but on the content, and for good reason. The cover of your book is for commercial purposes only. It needs to communicate title, author and publisher upfront, and elicit interest for the story with the blurb on the back, but the cover is primarily to entice the buyer and to communicate its genre. Still, there is so...