I've been gesture drawing lately with my left hand (I'm right handed) just as an experiment. It's been quite interesting to see the drawings that emerge. I often times like them more than the drawings I do with my right hand. They have a freshness and life to them that my right handed drawings seem to lack. I'm not sure why this is, but I think it's because I have no bad habits with my left - no shorthands that I can rely on. It may also have to do with the fact that my left hand is directly connected to my right brain, so maybe that's helping? In any case, I recommend giving it a shot (if you're left handed, try drawing with your right). The first few drawings will probably be illegible, but push past them. I think you'll find that you'll get some very interesting results! Here are a few of the more successful left handed drawings I've done in the last two weeks: