Amazing submission! One of the best I have played!
Clean visual, soothing atmosphere and nice challenging puzzles.
Only time I got a bit frustrated is when you had to fly/glitch high up but because you have to look down you can't see the translucent wall behind you that will make you drop the crate if you press space once too much after doing a complex puzzle. I probably would have made it a solid so you cannot fly higher but don't drop the crate, but maybe I'm missing something.