exaggerates how much blood is on his hands, the highlights the extreme weight of guilt he now carries.
"his silver skin laced with golden blood"
"and his gashed stabs looked like a breach in nature"
The word "gashed" implies that the wounds inflicted on Duncan are severe and violent. It suggests that Macbeth's actions were not just a murder but a brutal, violent act, which was unnecessary and excessive.
"there's daggers in men's smiles. the nearer the blood, the nearer the bloody"
"dauntless temper of his mind"
banquo's brave nature
"placed a fruitless crown, and put a barren sceptre in my grip"
"put rancours in the vessel of my peace"
filled his head with bitter thoughts.
"and make our facesvizards to our hearts, disguising what they are"
"O, full of scorpions is my mind, dear wife"
"there's blood upon thy face"
"whichofyouhavedone this?
shows his paranoia
"bloodwill have blood"
"i am in blood stepped in so far, that i should wade no more; returning were as tedious as go o'er"