Great work
The 3D kicked ass of course, that made the movie. The voiceovers were decent and timed fairly well with the music, so that gets an 8. However I did find the backgrounds lacking. One sugestion would be to skip out on all the 3D and complex perspective work for small objects and distant background. Keep the main indicators for perspective dead accurate, keep the rest reasonable. Treat the backgrounds more like you're painting a landscape; they don't have to have perfect lines, the details of the background aren't important compared to the foreground, and color is your friend.