I'd say slow down a bit and it looks like you're wearing right handed shoes, but actually that doesn't look half bad for being undeveloped. 

I agree with Gizmo.  Slow your feet down a bit and work on sticking the landing and not being so off balance.  Off balance means no leverage at the foul line.  Once you start sticking the landing, your leverage will be better thus you will throw the ball better and more consistently.

http://www.youtube.com/watch?v=4LToTR6Iwxw

I copied a link to my video to give you a more visual idea of what I am talking about.  As you notice, I don't even take any kind of skip or hop in my approach and still generate a decent amount of ball speed (18+ mph at release).