pretty good 4 a first game.

good job, since your a member of mochiads i suggest you use a mochi scoreboard,
if you dont know how to put a mochi scoreboard into your game go to
'emanuele feronato' and search for 'mochi leaderboards' there should be a tutorial that will help you. also add a sound onto the frame of the popped bubble, this will just add a more realistic audio display. Try applying bevels to your symbols you will find them in the filters panel.
Also did you use the tutorialized / flashkit balloon shooting tutorial thing because the game is very simular, it has the same: score, time, crosshair and rotation and the same sized game width.
good job with it anyway,
fix the things mentioned aswell as graphics and you will have a decent flash game.