The concept is very interesting, the assets are also fitting for the main idea that is chosen, it's quite confusing as to what exactly the player is supposed to do. What I would suggest is either lean hard on physics based puzzels, as you already have items that can be pushed, you can use those for that, a good reference would be the Portal games. I think that a good addition would also be to introduce a blur that would apply to the tiles that are below, or above the player, to isolate the visual space and not confuse the player. Otherwise, keep doing a great job!