Director Of The Dagger Scene

If I was a director I would put Macbeth center stage alone. When Macbeth reaches for the dagger on the string in front of him but will miss while the dagger will pull up out of his reach and sight. it will pull up when he says "the handle toward my hand? Com let me clutch thee:"(2.1.34) When he starts to see the king the spotlight will be on him to show that it's only him on stage with no one to talk to but his mind. The spotlight will come off when he says "Which was no so before me. There's no such thing." (2.1.47) To show he knows he has imagined all of this because of the murder that he is about to commit.