This was really cool! Great presentation, and you did a good job explaining the mechanics without any text, which is impressive. I like how you sort of have to set-up your attacks ahead of time, it's a really creative and unique way of doing this sort of defense game.
It was a little difficult at first for me to tell when a cloud I pushed was going to pass over an enemy or miss them completely, I think because I was aiming as if I was pushing the upper cloud part? But the shadow seems to be the actual hitbox so I was always a bit off. Once I got used to it everything was fine though. I'm not even really sure what you could change there, maybe if the player was on their own cloud and at the same level as the things they were pushing then the angles would have made more sense to me? Not sure.
Overall great job though, I really enjoyed this.