Step One: Watch Mary Rose Cook Live Codes Space Invaders from Front-Trends. (The second worst conference name ever?)
Step Two: Fork this gist.
Step Three: Respond to this question in your fork: What is one approach you can take from this Mary's code and implement in your project?
Step Four: Totally Optional: take a look at some of the other forks and comment if the spirit moves you.
One step I know that I can take and one that I liked was how she made all the pieces was aware of each other and also how she implemented (even though it was very quickly) the key presses. I really appreciated her ability to communicate the importance of collision detection how there are many pieces but they are all aware of each other.