Here is a piece I did for Survival Illustration. We had to do a caricature of one of the illustration teachers, and they were assigned at random. I got a painting and drawing teacher named Mark Eanes who is infamous for his intensity, and his propensity for loving brown paper bags. He requires 6 hours of out of class work, and, as I mentioned, tons and tons of bags. I've never had him myself, but have heard that he produces great results from his students.
I tried to capture his look and intensity with his all-knowing-glasses-lowered stare. I also exaggerated his love of the brown paper bags, choosing to sit him amongst a sea of brown paper bag renderings.