Preliminary Sketch for caricature of Bruce Bickford

I know this is sort of a crappy drawing. It is one of the preliminary sketches that I have chosen to develop into a full caricature of Bruce Bickford, a facebook friend and a well known clay animator. I want to do a good job on this one, so I'm going to think about it as I do other things and tackle the final work tomorrow. This was done with a wacom tablet in photoshop and it took about 5 minutes or so to draw.