This is an interesting subject and approach and makes for a fun game.
The art is quite good and does the job. It really shines when he looks in the mirror though. Those depictions are excellent.
The puzzle solutions are all pretty obvious, but they make logical sense and are tied tightly into the story. Perhaps if there were a few more red herrings it could make them more satisfying.
The music and sparse sound effects work well enough, although it might could do with a bit more sound design.
I can't think of anything major negative about this game. You might make the inventory more obvious though. It was a bit hard to find. Someone with less experience with adventure games than me would likely have even more difficulty with this. A bit more intricacy and fleshing out of the story may be called for, but it works as it is as well.
Although it was very short, this game was certainly fun to play.