Interesting site you have. The layout could use a lot of improvement, but there are just so many questions that I have. first of all, where did you get the engine used in these drawing tutorials? There's a lot of potential with this.
I myself am making a How to Draw Anime website (and a lot of other things to go with it) and I just happened to stumble across drawingnow.com. Though the tutorial engine you're using isn't quite perfect, it's VERY near to what one could achieve through other methods. That said, nothing beats the simplicity and ease-of-use of the drawing engine you're using.
So yeah, I'm looking forward to contributing to this site... pitting my mad skillz against others here :)