I found some tut for u...
http://fc01.deviantart.com/fs44/f/20...asty_BSGFX.jpg
http://fc09.deviantart.net/fs70/f/20..._by_xLewiz.png
these might help..im sure theres a bunch more on DA...
*i dnt take credit for any of the tuts just posting for educational purposes*
