To deliver performance like this when he just turned 18 = WOW!!!! And the best part is that it shows how much room there is for improvment.. I mean If he can do this at 18, imagine what he will can when he is 25 (and we ALL know that he is such a hard worker)!!
He can do vocally much better, but concidering that terrible backingtrack, that it was his first performance of song and that he was nervious(he messed up lyrics), plus that choreo, vocalls were actually pretty solid
Well done Justin, you are here to stay