Nice game, I like the mechanic, I don't think I ever seen something like that before (I don't play a lot of platformer).
Did you try to switch the controls to the mouse? I think if you click where you want to throw the crown and click again to teleport it would make the game easier (but you may not want that, I don't know)
At first I ignored the big bold text at the top of the page as it looks like a title so I was confused when trying to throw the crown.