thats not a bad idea m0g.
perhaps that would make a good replacement for the wiki?
just cover the basics of all the mediums. color mixing, shadow, perspective, reflections etc.
i'm fairly proficient with a pencil and pen but only when it comes to non-living (zombies dont count

) things like cans and bolts and other things mechanical/architectural.
i think its just an extention of all the drafting i did. although I can say that shading makes all the difference between a drawing and a doodle.