Please point me in the right direction!

Hey all. I am creating a simple flash game where you rotate a planet to make the buildings on the planet avoid incoming meteors. I was told that there is another just like it already, but I don’t want to see it because it may restrict my imagination.

I have everything pretty much planned out now in a “game script” of everything that i want to happen. only thing is, i’m not sure where to start. Actually, i implemented rotating the planet and the timer so far, but that is all. I was wondering if anyone wouldn’t mind reading through my game script and pointing me in the right direction. I am trying to wrap my head around creating classes to handle different aspects of the game, but not sure what to put in a class and what not to. Any help would be greatly appreciated. Thank you says this unworthy and humble one.

I attached the game so far and the word file