Very cute graphics with an interesting mechanic. Well executed for 3 hours. I got a couple hundred points and had a good time.
Some things that might make the game better:
I had to check the itch page to read the directions after a couple of attempts. If you find a way to communicate the game's rules inside the game it would make for a smoother experience.
Feedback on the player and leaves would also lend a lot of polish to the game: if you added some sound fx, particles and simple animations when the player collides with a leaf from the top or bottom it would add a lot of fun to the experience.
Bravo!