Ok, so here is one way that I'll create my art.  I don't use this style all the time, and I dont remember all the details...My main suggestion would be to experiment with photoshop after you pull a couple bong hits.

First you need a blueprint.  I didnt draw this reference image at the time.  I try to draw my own now...but really, we're using it strictly as a reference.


Now, you need a huge library of textures.  They're all over the net.  I start by finding pieces that resemble the facial features.








Now I'm going to start giving the textures some color.  I start in black and white because it's always easier to add color later.  Image>adjust>color balance.





I created the background basically the same way.  A lot of layering of textures and playing with the blending options and using color balance to give it the overall red hue.

After i have the background i put the two together and start meshing them together and working out a few details.




And the final image...