Practice practice.
One really important thing many beginners completely overlook is that it is kind of vital to know how to draw BEFORE you animate. Animation is just a series of drawings, how can you draw enough pictures to make an animation if you can't even draw one?
I'd also suggest learning the basics of Flash script, as well. awkwardly looping videos like this are usually signs of a novice.
My suggestion is to focus on learning to draw well first, then come back to animation. Good luck in the future.