Glue Down Your Spine
Glue the spine of your book to the middle of your paper, so that there's plenty of paper left to fold up over the front and back cover. Let it dry.
A Note on the glue work: With all of these dry times, longer will be better. If you can leave a half hour between every step that's good. If you can leave in two hours between every step, that's better. This goes double if you are using the Elmer's-type glue.