I'm no expert but...
Here's the thing, the main thing that bothered me was when I was seeing below the ground when the camera was shaking. Also, as tip, see if you can get closer to the action by occasionally zooming in more on them.
If you are using action script 2 then I highly recommend making and using a v-cam. If you use it correctly, it can make your life a whole lot easier. (well, for me anyway)
Bottom line: This wasn't bad for a first flash