(3) Shivering!

In act 3 scene 4 after the killing scene towards Banquo, Macbeth seems happy when the killing was perfectly done. But when he enters the hall with some other friends in a very good party, Macbeth seeing the Banquo’s ghost appeared in the ceremony.

At first he was trembling of seeing this banquo’s ghost, he mention banquo’s name at the first place so I think that he is the one who play this game first.he said that he rather sees banquo's absent for some reason than anything bad happen to him.its a very irony when he himself ask someone to kill banquo 

Banquo’s death make him happy with the haunting of his king title but did not make it for further happiness because banquo was his best man ever, In friends relationship or in battle of war.

The hallucinations is like the flying dagger towards the king of Duncan.in addition to Macbeth from his wife..and also he became more confident when he quote something else like this..

MACBETH

Blood hath been shed ere now, i' th' olden time,

Ere humane statute purged the gentle weal;

Ay, and since too, murders have been performed

Too terrible for the ear. The time has been

That, when the brains were out, the man would die,

And there an end. But now they rise again

With twenty mortal murders on their crowns

And push us from our stools. This is more strange

Than such a murder is.

he try to make himself not the one to be blamed,but instead of relieving his heart, he actually make things worst because of the haunting to be the king different from just a normal killing...

by maherlamm