Although hard to see, it looks like you are not doing enough pronation (forearm roll, ISR) because the racket hitting surface is pointing down as you hit the ball. It should point to the right side fence. IMO, that is the easiest way to get extra power.
Check this video out. http://www.youtube.com/watch?v=iONY6fcqZGg
Once you achieve that, then you can correct your trophy position as others have mentioned.