Compare Macbeth and Lady Macbeth after they kill the king in Macbeth.please help me!

In Act 2, after Lady Macbeth sets up the scene and Macbeth
murders King Duncan, the couple respond quite differently to the crime that they have
just committed.  Macbeth is really nervous and fearful--he worries that someone heard
him kill the king.  He is so nervous in fact that he forgets to leave the knife at the
scene and brings it back to the bed chamber with him.  When Lady Macbeth sees how
nervous her husband is, she tells him that he must pull himself together and act as if
nothing has happened.  She is very strong and confident.  At the end of the scene,
someone knocks on the door to the castle, and Macbeth says that he wishes the knocking
would waken Duncan from his deathly sleep.  Here, he shows regret while Lady Macbeth
appears to be comfortable moving forward.