I liked it!
Very nice animation, loved that. It didn't went too smooth (you used a low framerate?) but that didn't bother this movie, it actually looked pretty nice.
The style was very nice, so was the zooming in at the beginning. Smooth animation, but I think you should have animated the rabbit a bit more, because he popped up just one frame. But as you said, you haven't had that much time on it.
One other thing, I think something went wrong with the preloader because the first shot where everything zooms in went a bit laggy, but it was pretty detailed too so that could also be it.
Overall.. very nice movie, you should make more! And for the next one, really take your time because I think if you do that, you can really make something special=D