This is a great piece. I was actually looking to get something very similar done for a project I'm working on. Would you be up for a commissioned piece? I think you have a good sense of the tone we'd be going for, etc.
cool! would be nice to draw waterfall out of the lower side of his jaw (left side from the viewer POV) but not too big to prevent hiding his skull from the viewer. will looks like greedy monster salivating even now