Macbeth’s instruction to the murderers to ‘leave no rubs nor botches in the work’ can be linked to the blood he viewed on his hands earlier, and his hope that Neptune might wash this away; this might be a sign of his being affected/ paranoia earlier, and his desire not to suffer from this again.
The term has since been applied to Elizabethan and Jacobean drama that emphasizes horror, such as was one of his most popular plays, only later to fall into disrepute.
Act 3, scene 2 Titus, Marcus, Lavinia, and young Lucius (Lucius’s son and Titus’s grandson) enter. He resolves to learn how to interpret what Lavinia thinks and feels by watching her closely. Titus rebukes him, over his protests, for killing an innocent creature.
While there is a coronation Shakespeare’s not showing it may be his way of saying that it is not the appropriate coronation for a true king of Scotland, God’s representative in this place.
The scene also shows Macbeth’s ruthlessness and further descent from his original role; whereas before he was considering about whether to act in an immoral manner now he does so without second thought, reasoning that to keep his throne he must kill his friend, which shows that he now values the crown above all else (this is further exemplified with his confirming with Banquo that Fleance will ride with him, so as to be completely successful with his plan).