Good pace of action but room for improvement
I like the music, and it's really well suited to the animation. You've got good potential if you keep this up, and I'm sure that if you apply yourself to a longer - and more detailed - animation, it'll score higher.
The sound cuts out too early, and the ending doesn't finish the piece off well, but it's clear from your comment at the end of the movie that you made it with a sequel in mind.
Keep it up, and keep working on your animation skills - you've got good potential.