Mondongo, I'd be happy to help, but I must admit that I only have photoshop and paint shop pro so I can't answer any specific "how do you do this" questions.

Right now what I think your sig needs most is the resolution of the center area: that little square animation is a little confusing. I find that it helps to start out with a specific idea of what you want in terms of color will make the sig look like it fits together more. Like how Kagari's was dominated by greens and blues, without any bright yellows or reds to throw it off, and mine is more monochrome with only the blood splashes making it stick out.