I love the art in your game, it has its own personality and fits the gameplay very well.
For a relaxing game it's perfect, the audio is very well done, as is the art as I mentioned before. All the elements relate very well, and the level of polish is great!
Personally, I don't usually play many relaxing games, or ones that don't have very clear objectives or challenges. But still, I think it's an excellent idea for a casual game.
Congratulations and great work! :D