I can't obviously do this assignment for you, but what I can do is give you a few pointers in the right direction. This is a great assignment, but to do it successfully you need to realise how the different view point would radically change the tale and our understanding of the characters involved. Key to note is that Captain Torres knows that the barber is involved with the rebels. Thus you would have to explore his reasons for entrusting himself to a rebel sympathiser in such a dangerous situation. Why did Captain Torres do it? What does that say about his character? Also, you would need to think about to what extent the internal conflict of the barber is perceived and understood by Captain Torres as he has his shave. In the original story we are told that the barber tries to hide his nerves, but is he successful? Also, we are told of the flashback that the barber has when he last saw Captain Torres. Do you think Captain Torres remembers the barber and will have a similar flashback? These are some of the questions that you will need to think about and answer before beginning your internal monologue. Good luck!