I got up to level 16 and then then I moved on.
I think the art style and presentation is fantastic! Very joyful game. It's kind of satisfying to figure out the puzzles in the later levels. Overal it wasn't very hard but that is definitely ok.
I found a small bug in the animation. If you click too fast the objects get stuck in their animation state.
But really: Well done! This one is really well worked out.