Good, with a few flaws
I understand that this was a test video, so I'll tell ya wants needed to be improved:
1: The flow and speed of the animation needs to be kicked up a notch. The animation was pretty slow paced throughout, leaving the excitement pretty fast.
2: Take your time. This was made in a week-two weeks, and it obviously shows parts where it was rushed.
Overall I think it was pretty good for a testdrive. And note that I'm not trying to hate on you, I'm simply giving you some tips for future animations.
Happy animating! ;)