Well done, but seems unbalanced...
First off, it looks like you put a ton of effort into this and it shows. The backgrounds look great and the special effects stand out alot. The music was well-chosen, and the character drawings are clean and smooth. The color choice for the backgrounds/sceneries was beautiful, and it was well-presented overall.
Problem is, some things seem like they don't fit. I don't have a problem with the 3D backgrounds;but the characters, because of their coloring, don't really look like they're a part of the scenes. Another thing is that the movements are pretty stiff and uninteresting for the character designs to be so simple (there was way too much tweening and not enough fBf). The story I won't comment too much on, it didn't stand out too much to me but it's only the first episode it'll get better.
Other than those things, your effort was worth it and the mistakes can be easily fixed next movie. Keep up the good work, I see good things for this series.