This will really need a level selection page, I think I got stuck at level 5 or 6. Anyway, it is a good puzzle game with good level design. The mechanics has potential to scale. Since we are on a paper boat, a directional wind zone that can push the boat to a direction would be add more depth.
The pixel arts are charming too but some things are too tiny for me. The water plop sound is cute, and I wish there is peaceful music or ambience to fill the silence. Regardless, you did good.