Calm down guys. Some non-nice things were said, but we don't have to keep arguing to defend our honor. The only thing you're really defending is the fact that you, too, are an idiot.
And Warhead, I'd resize my sig if I were you, before Doom has to do it for you.
As for "The Sig," it's OK, but as some people have said, it doesn't look good with colors inverted. Play with the "curves" tool like I did in mine. Also I agree with mastah, the smudging is rather over and underdone at the same time. Try a smaller brush, and more strokes, also a shorter length.