That was really good!
You did a great job on this. The animation was very fluid, and though this is the first movie I've seen of your series I'm already somewhat into the characters.
The length was great, and the plot was very well laid out.
Decent voices too, and sound effects.
I don't have much of any criticism to give you, except maybe work on more of a variety for the voices, you acted them all didn't you.
Maybe work on different voice or get other people to act for you.