I thinks its very good, though some of it looks like you've taken a bit of the same image and changed the colour and moved it a bit, which isn't really the point lol
Well, you can't expect it to look "great". I am assuming you took different pictures of obama and put them together. I think it looks pretty good.
I am....But, on topic, as is its ok, but I would like it better if all the rectangles ended where his face does. Mostly around his chin area. The right ear is flat on top too.
Same here, someone else who doesn't agree with the election! Wow.. Staying on topic, it looks like his head his slanting to the right a bit if you look from a bit of a distance.