I simply make the cover as shown in this tutorial: How to make a paper book cover.
(I didn't use a brown paper bag but you get the idea.)
I used spray adhesive on some glittery scrapbook paper (from DCWV-All dressed up pack) and attached it on the finished book cover, trying to center it around the spine of the book and folding the overhang at the top and bottom of the cover.
I cut some strips (about 1 1/2" wide) and my daughters name from some black vinyl. I attached the vinyl strips where the scrapbook paper and the book cover met just to hide the hard line there.
On one of the covers I used a free svg file I found at EINNEJ. There are other great files there as well.
I attached the vinyl flower border and the names and voila...they look really cute and there was no tape involved. They stay on really well and look great.
For the flower border shown please visit the following site: EINNEJ