A fun exercise in contrasts and pos/neg that I'm actually very happy with. Drawn in a couple of evenings in the hotel after the show. No reference at all, but lots of erasing and re-draws.
The most impressive part of this drawing, to me, is the posing of his fingers/ hand. That's a tricky hand-pose to get right! Oh yes and the arrangement of splatters on the wall above his head look great.