Interpret yourself as Macbeth, and then write your thoughts about your first encounter with the witches.

If I were Macbeth and met the Weird Sisters upon "a blasted heath" (as the stage directions of Act 1, Scene 3 describe it), I would no doubt feel many emotions. First of all, based on Banquo's description of Macbeth's reaction - Good sir, why do you start, and seem to fear/ Things that do sound so fair?" (51-2) - I would be frightened of the the three sisters, and probably more than a little repulsed by their wild and wicked appearance. Second, based on Macbeth's response in lines 70-78, I would feel confusion and doubt about the prophecy and would ask for more explanation. However, judging by the way Macbeth gradually warms to the notion of becoming king ("They did say I was destined to be king, after all," he probably reasons to himself), I would begin to lust and hunger after power, especially after being unexpectedly named Thane of Cawdor later in the scene (105). As such, it's clear that, in Macbeth's first encounter with the Weird Sisters, he already begins to experience the conflicting thirst for power and fear of the fulfilled prophecy that he experiences throughout the play.