This definitely needed more levels, though I have to say that what is currently here is fantastic none the less
Right off the bat, I'll just say that the game looks gorgeous. The audio is pretty fitting as well
The main mechanic itself is pretty damn clever in both how you've implemented it, but also how simple it is. Love how you didn't even really need to explain that you can pick up parts of yourself that you left. It's more or less implied through the second level after the tutorial.
That said, I do wonder what more levels and puzzles would have looked like since this game is kinda begging for more mechanics to ensure that it doesn't get too repetitive. The 3 levels that are here are cool, but the 2nd and 3rd basically feel like the same puzzle so to speak.
I also feel like the camera was slightly clunky. Maybe a fixed camera could've helped in some places, though I'll admit that I'm just nitpicking at this point.
All that said, very damn solid game that you have here none the less. Frankly even I had more ideas for my game, but couldn't flesh them out in time and as a result, my game is basically unfinished. On that note, I completely understand choosing to instead polish the base that you managed to make, and I'd say you did a damn good job on that
Good stuff