I took a life drawing class at UCLA my last quarter with Jacquline Wazir, and fell in love with marker rendering. It's so fast, esp b/c you can't really go back and fix anything you don't like. Once you put the marker down on paper, that's it! note: Probably my favorite model--Jackie always said curvy models are the best to draw. It's true! This one was probably a 10 minute pose.
This was my homework assignment--finding a photo in a magazine and sketching it out. It was intimidating at first b/c I didn't know if I would be able to capture the photo quite right, but I think it turned out well. :)