Lots of room for improvement
Pros:
your animation was smooth
good choice of music
Cons:
Screen was tiny
presentation was boring
lack of imagination
try coming up with characters, and a storyline. Noone wants to see your first experiment with a flash animation if it has nothing interesting to offer. Sit down and think about something that would make a cool little story or a funny joke, and bring it to life. Keep trying and you will succeed.