Great for a first submission
Overall it was very enjoyable, and the only problems I saw with it are things that will surely go away as you become more familiar with Flash. Your pacing was great, your choice of subject was interesting, your synch was good, and you produced something that was very likable. Kudos to you for figuring out what you were doing -before- you started hitting the Submit button.
Good job! I look forward to seeing more from you!