Nice! Some suggestion to improve are:
- In the beginning it says to press the plate, but nothing says to go to the left first, so this could be confusing. The itch.io page says how to pick up stones, but nothing in the very beginning says to go to the left. Since it's supposed to be guiding you with instructions, it's confusing that actually you should ignore the instruction and move to the left first right away and pick up the stone. It's necessary to move to the left first to show the right instruction, which could be confusing.
- I think you should have a "Reset" functionality which puts you back to the beginning of that part of the level. It's possible to get stuck in the ground if you lift a block and place it on top of yourself by mistake in a certain way.
Other than that I think you did a great job on this game, it's very unique and fun and the mix between the puzzle and platformer really works well.