Pretty neat, if basic puzzle game. The mechanics were very intuitive and straightforward, and it was clear what the goal was, with the challenge being execution. The main gimmick was also used really well.
However, everything felt really sluggish and slow, which made making mistakes and trial and error very annoying. I'd suggest speeding up all the movement, as well as adding in an undo feature.
The graphics are serviceable, but really go overkill on the bloom effect making everything feel really pale and washed out and it's not really that great. It's also hard to tell what's a solid object, which tripped me up on the first two levels. I'd suggest giving solid objects outlines like you do the player tiles.
The screenshake on large objects not being able to move also felt a little too intense and needed to be toned down.
Overall, it's a very solid game with a good core to build off of, with some smaller issues like the graphics and repetitive audio needing to be ironed out. Good job on your first jam game!