JUICE: I liked the confetti when I cleared a level. The transition between levels was also very nice.
Gameplay: Good puzzle designs! Not too difficult, but challenging enough that I had to stop and think. I realised half-way through that I was using WASD and arrow keys, which probably wasn't helping...
Graphics: Simple, but pleasing. I especially like the background.
Sound Design: That music is so soothing! Did you write it?
Respect of the Themes: Really good use of the "mirrored" theme. You got some great puzzles out of that simple idea.