Great Animation
The animation and music were amazing and genuinely top-notch, and the voice acting seemed to work very well with the characters you had. There's just one thing...
I know you mentioned that you were going for a kid's animation and not to expect a great plot, but the plot progression in general was bad to a point of being painful. I'm not trying to be malicious to you or this clearly amazing animation, but I've never seen any story with so weak a plot without being satirical, even kid's stuff.
You've clearly mastered the drawing portion, but please, for your own sake if for no one else, put more work into your script next time.