Uh... hmm
This felt more like a .gif with sound than a flash video.
My biggest problem would be how long he held an energy ball above his head with no indication that the movie even started at the beginning. I actually checked to see if it was playing or paused.
Either make the energy ball increase in size when 'nothing' is happening or have a sound clue.
I'd also suggest a larger screen if you actually make a full movie. And make sure there's something more than a white background. That would be good.