Very good, but seems familiar.
Hey man, have you read Dave Iseri's entry in The Rising Stars of Manga 4? If you haven't, you should look it up, you'd be pretty freaked out by how similar it is to this.
Other than that, the frame by frame bits were really smooth, and you handled the mood and atmosphere well. It's maybe a bit short, could've been better if you'd set up a bit of the background story or just extended some of the sequences in it. Overall, great job, especially for a first movie.