Okay as a starting point.
I would say you have done some decently good animation here, though I would really try and work on the quality if you want to really start doing well here. Another thing is the sound quality: I really don't know how importing sound to a flash animation works, per se, but I'd say you could do better than that. If you had to download this tune off of YouTube, that I can understand, but even then there are higher-quality downloads than this. You could ask around the audio portal here for future submissions-they do good work, believe me- as there's really no problem with collaborative efforts, really. All in all, work on your animation quality and get some plots thought up, and you could do well here!