... I think your officially better then me. D: I have no real CnC for this. Your really improving. =D
and it is Zack, just fyi lol...but very good work, if you've played Crisis Core, then you would get my suggestion: the white spaces around the edges, you should try to put images of his friends (Aerith, Tseng, Cissnei, Genesis, Sephiroth, Angeal, etc)
Nah, I think that'd make it too busy. Simple is good, cuz it has enough going on brush/color-wise. that'd be a good idea for a different sig, though, w/ different layout
Hey.... that's actually a pretty shmexy sig yo! =O Good Job! I really like the colors and the background. And Zack of course looks awesome as always.