MasterParticle - my first attempt at particle effects

This is my first attempt with using particles. Its simply some snow falling, and you can toggle the direction its going, as well as the speed using the arrow keys. I purposely made this specific source as simple as I possibly could. Now that I understand the basic concept of how particles work, I can work on implementing them in much more complex ways. Thanks to Derick Dong's cool wheather effects demo, thats were I found out how these things work.