I just finished playing your game, and I really enjoyed it. I felt that the controls were a bit too sluggish; I think it would be nice to make the player controller more responsive.
I really liked the music; I thought it matched the game's art style very well! Congratulations on your work!
I've also developed a platformer game if you'd like to check it out https://guarana-studio.itch.io/super-cat-jump