I think your form is great Robbie-Lynn. You seem to have a very relaxed form with not too much forefoot. I have only two suggestions:
1. bend your knees a little more (increase the shock absorber effect)
2. try to get more heal contact, so that you take some of the tension off your calves. Run in a puddle and then take a look at your footprints on a dry surface. Do you see the entire footprint (toes to heal minus arch)?
As you speed increases, try raising your heals closer to your butt. This too will reduce tension in your legs.
Remember -- lower your expectations for barefoot running. It needs to be a very slow progression
Blog entry posted by Barefoot YOW, Oct 27, 2011.