The aesthetic is very cute and well executed! The game could benefit from some audio, just for that extra bit of immersion.
The gameplay is smooth and easy to get a hold of. I feel like it could benefit from more dangerous threats/hazards to make those risk/reward moments of jumping over things feel more satisfying and challenge the player for a more engaging gameplay loop.
Variety in the objects could make for interesting gameplay, like gum that slows you down/prevent you from jumping or bombs that explode, launching the character on contact (if you guys decide to expand on the project).