I attempted this years ago, but I've been steadily working lately at creating a library of youtube videos to help people out with art.
Currently I've just been doing a bit of a series about digitally painting and coloring facial tones, but I'm going to keep trying new and different series. Probably will do one that just offers art critiques or one that talks about great designs in pop culture... aside from the tutorial side of things. Anything related to concept art, basically.
My channel is here: http://www.youtube.com/sinixdesign
Any suggestions on teaching technique and video presentation would be great. I'm trying to make sure everything is fun and informative.. or at least interesting.