This was a very quick caricature study of Bill Murray. I think that the fact that I did it so quickly may have helped actually because I kept it loose. I didn't get hung up on the details, which usually tighten me up, and the image ends up looking stiff of forced. I also didn't worry about likeness too much. I only spent about an hour and a half from the quick liquify sketch to the final caricature manipulation. It was just an exercise. I've posted the source image as well as a short video clip from Caddyshack from about 1980 here [link]
which is the Bill Murray I grew up with. That and SNL.