6/10 - Has good colors, but the effects seems pretty random, and the flow is a bit lacking. It's a nice sig, just needs a tiny bit of work. 8/10 - Very clever render and background work. I think it flows great, and the colors are decent, though they could mesh with the picture a bit more, but overall, a great sig.
9/10 and idk if the second one is supposed to be a sig, or a banner lol but id give the second one 6/10 =D