Not bad, but fix some things
You have a great start for someone who's new to flash.
Your animation was pretty good. Surprisingly you were better at frame by frame than tweening so I would say keep up the fbf. Your fbf was pretty smooth and looked convincing. YOur tweens however, especially when the main character was conducting, were not too good. Work more on drawing the parts of the arm in a way to look convincing instead of just using ovals or something. I would say keep up the fbf.
Another thing that stood out was how the background image or colors or whatever would not cover the whole stage in flash. There was some white areas off to the sides which took away from the flash as a whole. It is easy to fix this, only a matter of making sure the background image covers the whole stage. If your going to move the background during the animation it's best to make a large image that covers way more than the stage. PM me if you need some help with this.
Overall it was a good movie though. Keep up the practice and you'll make some quality flashes here.