Potential. Nothing else.
This might actually become a decent movie. It's got good animation and drawing. The music was good. I think you know what you're doing. Just make it longer. Well, into an actual movie. Give it a plot. Or make it a game. And once you've done that, you could even do a series. But please only do a series after revising this piece. And overhaul it. Lengthen it.
By the way, please actually fill out the rating of the movie accurately.
But still, you've got potential.
I hope to see some more of your works.