I agree with Adarias, the head is by far the best part of this. The idea you have is very very cool, but below the shoulders it looks a little WIP in some places. I think if you continued to touch this up, it could be much better than it already is!
if the entire thing was as good as the portrait preview, this would be among the best pieces on the site. The body is a little lackluster by comparisson, both technically and compositionally, so instead i'll say it's merely the best i've seen in some time :).
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"Sorry. It has too much colors." No, it has too much awesomenes, I think the whole point of this piece is too have many colors :)