Wow, so much personality on the animation, colors and visual effects, the expressiveness and uniqueness of all of it, also on the story and music, which fit so well with everything being so upbeat and energetic, I just love it all completely. All elements of it AND the whole are so genuine and singular and I find that astoundingly beautiful.
I'd like to mention shoots like on 0:52 and others where I see some presence of straighter lines and edgier shapes and I'd suggest a sporadic use of that, for IMHO curvy and smooth lines and shapes seem to be your strength and thus something to focus on, if you'd agree.
Also I'd suggest a display of more expressive and also contrasting emotions from Mercedes around 0:14 and also some of that for Pearl moments earlier, I feel like that could say more about them. And I find some excess of variety in the colors of the visual effect on the credits (an effect that's repeated on many parts of the movie), I felt that makes it distracting and chaotic.
Those are the points I wanted to raise. Again, I really love a work so full of personality like this one, I sincerely hope you achieve success in whatever you pursue with those skills. I wish I could find a venue for donation/patronage so I could support you in a meaningful way. That's it, have a truly wonderful day/night/eating time/visit to the doctor/anything and everything.