I apologize for the delay, I have had a rough time of it lately. You did a WONDERFUL job of making this look like the person, I knew him at once, and even the smaller faces behind him have a striking resemblance. The coloring and shading are beautiful, and add to the overall insanity. The left hand is a bit off, perhaps if the glove were a bit longer..., plus the tails hanging below the chair seems strange as I imagine this chair as having a full back. Overall, absolutely incredible! It makes me wish you would draw my Harley.
Awesomeness! Geez I don't even know where to begin! Ok, let's try this... Great colours, shadows, composition (especially that the chair and the shadows backwards feels very 3D in comparison to the bg) and it is unfair that there are ppl out there who can draw faces that well! x) I can honestly say I can't find a single mistake and I don't know how you could have improved this pic so I am terribly sorry for not being able to point such things out for you, I know there is a process behind every piece of work even after it is 'done'. The only detail I can find to even try to suggest something is the gloves: left hand is glistening a bit too much maybe? Right hand has the right amount so compare to that one. Considering the light source I understand why but still Ok, very well done and I look forward to seeing more of your work!