Form is great! Any advise to be given is going to have to be from a higher level silver or gold coach because you look very smooth and solid at the line.
You have a style similar to mine, I've been working on some additional things that you may enjoy reading about and looking at:
1. Changing the height of my backswing through starting ball position
2. Walking left on my third step to create a proper swing path
3. smoothing my release at the line to allow for varied axis tilt for different conditions
I've tried to model my approach off of Diandra Asbaty's five step approach found here:
http://www.youtube.com/watch?v=RuX7sq9Ynp8This weekend was my first tournament with the walk left style and I shot
Singles 604 (played a bad breakpoint)
Doubles 719
Team 771
It allows my slide leg to finish very close to the release which keeps my swing path in line with no variation.
Again these are just things you may enjoy looking at, everything in your game looks good to me!