not a fan of the circles, and black and white doesn't really work with that tag. I'd like to see a colored version
"Kinda nice. But not liking the colors. Its better to be b/w IMO. Also blur some parts to give some depth.
I think the circles on the bottom would look better if the circles on the top were taken out, and replaced with something to add depth that didn't stand out so much.
It's a really nice sig overall, but I think the upper circles destroys the depth. Perhaps you should take it out or try burning it?