Some of the CnC is harsh from people who know nothing about GFX..
It's not a bad style to pursue, i sometimes use it with my sigs.
Take the one I gave you for example,
however, you had minimum things to work with since it was a render,
try a stock piece and see what else you can work with.
Back on the sig, there's too much negative space, and it looks incomplete,
I prefer no text, since the other text doesn't really have the effect of a text :|
If that makes sense :P