Caricature for character design class

I'm teaching a character design class at BYU now. The first assignment is on caricature, which I think I've talked about on this blog as great exercise for character designers. I don't consider myself a strong caricature artist but I really love it anyway.

Based on this guy, here: http://earthsworld.com/mars/2012/120526_fun_center/120526_fun_center_0028.jpg
I think my guy ended up a bit more squarish than this guy feels but I wanted to communicate how solid his face and neck feel.

In other news, Schoolism is having a sale on Self-taught classes, here's the flyer: