Pretty damn good. Those lines just pen tooling? It's a bit weird, having the grunge effect on the right and on the left a smoother effect, but I think it works really well. No real criticisms, looks pretty good to me. Much better than I can do. Well done. Now go to my Brute tag in this section
Damn i wish i can do sigs like that D: my sigs sux http://www.gamerenders.com/forum/index.php?showtopic=399542 :\