Average
We made things a lot like this in a certain high school class where we learned the bare basics about Flash.
As for the game, the timer lasts kinda long for the game to be amusing. My final score was 70 the first time, 42 with the sped up timer the second time.
The biggest problem is that this can't really be called a game - there's no way to win or lose, not even a little message at the end that changes depending on your score. Clicking grey blobs isn't exactly too exciting either. Try to think of a better concept for a game and then work your way towards that goal by learning about the actionscript you think you'll need to know.