Goof but needs improvements.
This was relatively well done, except for the frame rate. The frame rate here looks to be about 12 FPS, which is pretty slow. Try 24 or even 30 FPS, and try adding in even more intricate animation, plus sound.
Overall, a good first submission. Much better than most other crap that comes through here. If you need actionscript help, look here in the tutorials section, they have that stuff.