I like how you draw
Considering that this is a practice animation, I'd say it's pretty good. The hand drawn transition from humanoid girl to buzzard/ daemon is very nice in the sense that you didn't rely on Flash tweening and the frames (in between the first image of the unchanged girl and the final image of the bird thing) show the character expressing appropriate emotion as she changes (as apposed to being blank-faced calm)
There were some white flashes that could be edited out, though.
In short, as a practice run- I like it.
You have good drawing skills, but you should practice with Adobe Flash just a little bit more.