Beautiful, stylish, polished.
This is one of entries that really ticks all the boxes. It was a little frustrating how easy it was to waste water once you collected a load but that was probably more a problem with me than the game. Great stuff.
Yeah you should totally make it into a bigger project! I think it's mostly a problem with the player not the game but I'll try explain. For example in the first level on the screen to the left of the start, you can collect water, take it to the top right corner and then if you are facing the wrong way when releasing the water (towards the wall instead of the room) you lose it all and have to go back to collect more.