How do macbeth and lady macbeth conceal and carry their plot? Which parts go smoothly and which do not

Macbeth and L. Macbeth plan to kill the king in his sleep. Macbeth manages to Kill King Duncan in his chambers. They set the guards up for the murder and pretend to look innocent when Duncan's body is found. They might have gotten away with it were it not for some of Macbeth's more tragic flaws. Macbeth's paranoia and restless soul gets the better of him and everything unravels.