not being rude here or anything but it doesnt look that great (its good though) and the blue glow around the outside of the render makes it look fake..
maybe if you lowered the thickness of that line going around him, it would look better
youve got the basics..
now start adding depth, blur the background and sharpen the foreground , put c4d's over the top of renders to show layers and help create depth.
and also add realistic lighting.. most of the time a render will already have shadows where the lighting has been , use that to your advantage =D
I see where your comming from, id suggest that to lean towards the commercial type graphics. try adding a stage or crowd background. maybe blur it a little. and tone down the blue.