What I have so far.

Sooo, I've been drawing like mad, and here's what I have so far:
The top layer of the book pages
The bottom layer of the pages, with an example of an animal on it
An example of the middle layer.
18 animals for the 2nd layer, and more on the way.

So here's the top, middle and bottom layers, along with a few examples of the animals by themselves. :)