A few suggestions.
1. Add color. While not completely necessary, it's always a plus.
2. Add some kind of "play" button so we can make sure it's completely loaded before it starts (and doesn't stop in the middle as a result of it not).
3. Looping is generally frowned upon. Have an ending, or at least have it stop.
Apart from those, I liked it. The animation was fluid, albeit the graphics not terribly complicated. I liked the style quite a bit.