i got to say the ghetto gamerz 1 is probs my fave with all the little characters on it must of took a while for you to do that 1 or was it all in 1 big prerender ? either way its koool well done
try working your sigs more like the spiderman - venem blue 1
its like you work well on the render but dont bother with the background ? a tip from me is i would say the background and brushing etc needs to look really good and is more important then the render
once you know the backgrounds right the render will just fit