First color was better if you ask me. Get rid of the lines and add in some oriental brushes. That would go better. Just color replace the color on render with the BG Colors and you'll have a real good sig.
Nice, a Bleach sig In my oppinion, you chose a bad render, it really doesn't look Ichigo, maybe because of all those shadows that make him look... weird lol. Also the sword is a bit weird -.-
I think you should use some abstract brushes so the background doesn't stay that simple and maybe blending the render a bit more... My oppinion though