wonderful effects mate. render is nice, especially its colors, but the render isnt cut well (on the right side of his head(left of the sig) you can see a white line, that needs to be removed). colors are very nice, but dont like the b/w bg, try adding some color to that, a darker blue would be rrreeeallllyyy nice.

once the bg has a nice color i think it will be almost perfect, gj