Oof, this is a difficult game. One of my initial comments is: I shouldn't have to push a button to read the signs in this case (because then I have to guess which button to press, lol). I should just be able to walk in front of it for it to appear.
Other than that, it's a hard platformer, with a mechanic that adds to the difficulty, but does indeed make it interesting.
edit: Also, it would be nice if there was a way to cancel one of my throws, so I don't have to live with the consequences of wherever I accidentally end up teleporting to.