Amazing
First flash animation - but not the first time you've made computer-drawings. You've been creating art for a long time in Adobe Photoshop for quite a while, I can see that. And Adobe Flash CS3 fits perfectly for you, since Flash basically is much more userfriendly to the Photoshop users.
However, animating is just not a thing you learn in a few days. This looks like you've been animating for years (you might've practiced). You have skills, and just keep developing those skills!
It seems like you've been used to the music-mixer. Well done too.
Some constructive critism is always good: Try to raise your framerate a bit. It seems like it's running at default framerate (12fps). The "professional" (e.g. Disney) animations all run at 24fps. I know it's tougher to animate at such a high framerate, and it's not recommended if you're new at animating. Japanese animation on the other hand uses a low framerate. Try to raise it to 17-20fps, it'll run much smoother and you'll be getting used to that.
Well done againt, I'm excited to see how this story turns out!
Best of luck,
Vreal-Studios.