This mushroom shelf comes in 7 nakie layers ready to be assembled and customized!  (Books shown not included)
Finished size is 10”” tall x 7.5”wide. 
Holds approximately 60 books.
Book size suggestions:
.8”
1”
1.125”
Assembly is easy. Simply glue each layer to the next. The back layer can be painted or paper with scrapbooking paper for a pop of color behind your library. 
For books you can either make your own from cardboard, old magazines, old book pages, foam board (there are tons of tutorials online) or order a set of 3d Printed books from me.