Good animation, but that's about it.
For a first flash, I must say that the animation is very good. It's smooth, the colours are nice, and the characters, although basic, are neat. However, there is nothing else to this. The sounds are pretty good, but it's very, very basic.
I'm not saying that you're terrible at all. I think you have a lot of potential. Just figure out a storyline, some more characters, and I can easily see one of your movies on the frontpage.
Good luck!