What a lovely game. A lot of beautiful work put on in it. At the end my expectations weren't fulfilled unfortunately, but I shouldn't have so much hopes on a gamejam :P
Theme:
Amazing approach to the theme. It was clearly visible both in gameplay and artstyle, so huge plus on that.
Visuals:
Amazing stuff out there, it surely has some inspirations from 'Baba is You' (artstyle, transitions etc), but there's a lot of unique content too (also inspiring is also important, so no shame for that). Loved how smooth everything was. Background with those beautifully made particles really gave you that calm and dreamy vibe which was awesome. Interaction with the world was well done (you could really see your influence. So basically I have nothing to say out there. Actually the only thing that I considered a bit out of style was this trophy at the end, but apart from that, everything was wonderful.
Innovation:
Definitely a great idea. It would make a very good game on steam (ofc after enhancing). The idea itself is also so well designed, that if you were eager to create any story for this game, it would be really easy.
SFX:
Sounds are really well fitted (maybe you could randomize the pitch by little, as we hear the same sounds over and over and some variety might do some good). Music was great and it gave a wonderful calm climate to the game. If you could just make it a little bit blendable between each loop, as I could clearly notice when music was starting over and at some point of a game it made me consider it as mistake (and mistakes are good to avoid I believe :P).
Gameplay:
Pretty easy to understand (tho it's a bit confusing at the beginning (maybe some even more tutorial-like level at the beginning? Dunno really) and with a lot of potential to build upon. Also quite entertaining, I had fun with all of the puzzles.
Game Design:
It was all great. You really led the player well (All next puzzles were explaining the next ones very well). Game felt alive and it was wholesome, to one point :P Maybe it's just me, but I felt a bit unsatisfied with finishing the last level (it was even outlined in a different style, so by default I've understood that it will be special!) and well it was, it had one-more-water flower out there, but I wish there was something else (maybe 'choose level' scene would have a different design' or I would be taken to credits (even that would give me some kind of satisfaction), but I didn't get that, and I tried doing the last level like 3 times as I thought that maybe I've missed something.
For that I had to lower my design score by 1, so you won't get all 5 from me this time :P was close tho, unfortunately endings are really important as player stays with what he felt at the ending.
Wonderful game anyway, and big thanks for creating it!