Your book looks excellent!
I've been trying to make one of these for my friend, but I ended up throwing my first attempt at a cover out in frustration. The glue made the cover paper wet/wrinkly. How did you keep yours from doing that?
A friend of mine told me to use a glue stick for the covers instead of liquid glue. It works pretty good. I use a glue stick for the outside of the cover, but liquid glue on the inside.