Good Stuff
The music and sound design are easily the best part of the game. Charming, upbeat, and adds a lot to the mood.
The environment's sky colors, and most other colors, are cheerful and vibrant, which make the atmosphere feel magical.
The menu/UI design, as well as its interaction sounds and navigation, is pleasant and has great feedback.
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Stuff to Learn From
Some of the dialogue is confusing. I am not entirely sure what was happening in the flashback(?) when talking to the mascot who wanted to play. The pop-ups telling me where to go seemed random; I couldn't tell what I did to cause them (story-wise).
The tiny paths feel dangerous because they are too thin, so initially I couldn't tell they were intended paths. (This is intensified because the character is walking around on clouds in the sky.) A few NPCs were hidden by the perspective of the 3D assets, so I missed some entirely the first time visiting their areas. (Placing them in alcoves helped, but not enough.)
The 3D asset styles don't blend very well with the aesthetic, especially the dark earthy tones and black spaces. If you can change the colors and values to look more pastel/vibrant, I think that will help.