I found the best blog today- The Portrait Party
What an amazing idea... all you have to do is post that you are interested in participating, pick a partner and draw each other. When your pics are done, you can post them on the blog and share them with others. It's awesome to see the different techniques that people use. Some drawings are sketches, some are caricatures, and some are fully detailed. I wish I could draw people; I would join in the fun!