yoryo, that animation looks smooth, eased well and has some slight flow to it. Nice!
However, Elixir's right about it being off balance. When the character charges his blast, his origin point (orange node) moves past the point of his foot (imagine a vertical line here). There's nowhere for his weight to travel down so the physics would make him fall. Also, when he launches the blast it doesn't look as powerful or natural as it could have. Making him lean forward more so that his back is in line with his back leg would create a nice line of action.wraybies's Line of Action tutorial.
Still a nice and smooth animation though! I'd say it's High Beginner. :D