I started by
Step 1: Print out a clip art picture of what you want to make. Fold your piece of felt in half (so you have a front and a back) and pin your critter to it.
That's the basic process I used to make all my critters. In all honesty, the lion and the elephant (the fatter guys) were way easy to make. The crocodile, zebra, and giraffe were a bit more difficult.
Join me at some point later when I attempt to make these critters into something resembling a baby mobile.