I love the idea behind your game and the art you used! The music is fantastic too! I’d love to see you update the game in the future.
I noticed you used different layers in the background to create depth, which is a great idea. However, there seemed to be something off with the effect. It looked like the trees closest to the player were moving oddly, almost faster than the player. Maybe it's just me, but it felt a bit strange. Maybe try playing around with the speeds some more if you have time?