Thats amazing, one thing you could change is the characters, they seem a bit stif, you could atleast bend their limbs a fraction of a ammount so it looks smooth and realistic.
I recommend you embed images instead of adding a link to download it, since a lot of people(including me) don’t really like downloading things to their computer just to see images.
Other than that, the UI is great! I don’t really know any way to improve it.