Ofcourse I could take a look at your capx, but before I'd love to know the answers to a few questions, so I can assist you better.
What is it that you want to do?
What have you tried to make that work?
What did you expect to happen in the game?
What does happen in the game?
Adding features isn't really specific and adding objects and bullets and effects like you said in your first post are mostly explained in the great beginners tutorials in the tutorial section.