So, since Shujin is looking for some new GFX team members, I thought I'd help a bit by searching for some signature tutorials. I found two relatively simple ones, newbies at GFX could try these out to help sharpen their skills, and more those more experienced can get in some practice. I don't know if I'm supposed to be posting IMG tags here, so I'll link them instead. All credit belongs to those who created the tutorials.
http://cbimg6.com/tutorials/08/12/13947aa.png
http://cbimg6.com/tutorials/08/12/13947aa.png
Have fun, good luck, and post results if you follow them!