I think it's really good, the Sharingan stand out, and the tech look make it look a bit like Ghost in the Shell, using the Sasuke from the manga is nice and original, the layers go together well and it's not overly extravagant. My only suggestions are a more exciting font (the current one fits the futuristic look, but it's a bit bland) and maybe an avatar in the same style that isn't already in the sig.
7/10 for the sig
5/10 for the avatar (8/10 if you don't mind it being in the sig too)