How to create a custom abstract background

I discovered this abstract background by accident, obviously the settings shown could be changed to give a different look, hope you like it.

Dark Jessica Alba Skull, Free Forum Signature

I created this custom forum signature and large art for the game torn. They are all the same base concept, dark Halloween-esque Jessica Alba graphics. This is a set of so the sizes vary. 

I started with a Jessica Alba image that I though would work well with the concept then I resized and shaped a skull image to layer over her face. The background came next I applied several layers of texture, a layer of text and a cannabis leaf to a flat black base layer. The large art is the most like what I started with, it just resized to about 50% of my original. There were two smaller flash animations the second just being a hue changing background but it was just taking too long to load with both up.