Pretty good
Pretty good for your first flash. The animation of the characters is really good. I would suggest you put a little more time into the visual effects. For example, when the ice shatters draw out pieces of ice breaking apart instead of just the blue lines and a more detailed setting (trees, clouds, etc.). The time you put into your work will be reflected in the final product. In the single flash that I've submitted the parts where I got lazy are painfully obvious. And of course practice makes perfect. Keep it up, I'd like to see more from you.