I'm not to fond of the red fists, or the yellow badge. But that seems to be your idea with the sig, so if you like it, stick with it! Render could also use some blending. Background is nicely coloured, but too boring. Text could also use improvement. You have the potential, version 2?
Nice sig mate. The bg is nice but it's a bit too dark. The render is good. But I don't like the red colors on his hands. The text could be better. kiu mate