Quite funny and pretty inventive as well. I like that part but not so much fond of the right actually. I think there's too much of a different between the bg from left to right. And seeing as the left blends better with the render and all, I'd be in favour of continuing that
if you don't delete the font and the weird color lines coming out of his finger .. i will rip your sig and delete it myself seriously man, that part looks so stupid, doesn't match it at ALL and like SP said, too much difference between the right and left .. maybe do the same texture on the left side like you have on the right side and delete the black bar on the bottom .. and also the lighting is wrong give it another light source on the left side of his head all together i would give this sig a 6/10 .. it's good already but could be a WHOLE lot better if you improved on some things
it's most certainly not bad man, i do like the colors and feeling of it you just have some points to improve on