This is nice, but also very short! I feel like a soundless looping test animation like this would fit better as a gif in the Art Portal or in a compilation of other animations you've made.
While the lineart of the Flash brush is good, the animation of the character's main body appears stiff without the use of some easing in your motion tweens or incorporation of more frame-by-frame stuff.
Still nice for a first try, though. Good luck with your future Flash attempts.