In session #1 for my class 'Illustrating the Children's Picture Book' we did a Character development exercise I've created. Everyone in the class came up with some fantastic characters and at the end of the class had a sheet where they had drawn their character from both sides, front and with different expressions.
These here are some model sheets I found online on a great website on comic, and animation art. I think looking at these old model sheets for animations and comics makes it very obvious how similar and intertwined the work of the picture book illustrator is to that of the animator and comic book artist. We all have to get to know our characters and make them believable!