I can tell that this is an older picture. It doesn't look near as good as a lot of your other stuff. Then again, all of your other stuff is sprite work... I just don't think the colors are that good. He seems that he's in too small of an area. I think the box should be widened out.
I do see some originality here. There just doesn't seem to be good shading. I guess the art portal isn't really a place for sprite work. You're still a great animator! I just don't think this was interesting.