I would open the latern slightly and watch the vulture eye but it was never open
it fell upon the vultures eye an it was open and stairing at me
I dragged him to the floor and pulled the heavy bed over him
Po is trying to trick the reader to think that the main character was calm and planned out the murder. by watching the old man for seven days.
I dismembered the corpse I cut off his head and the arms and the legs
Po hints that the main character is not as calm and careful as he says he is. Because he gets caught by the old man showing that he was not as precise as he says he is.
Dissemble no more! I admit the deed
This scene shows him killing the old man by shoving the bed on him. Which was not the plan another hint by Po that the main character might be crazy.
This scene shows the main character dismembering the body in a bathtub before hiding him. which was completely unnecessary for him to do which again is another clue by Po that he is not mentally sound.
This shows the main character finally embracing the guilt and telling the police officer what he did
this shows that in the end, the story we are being told is just the main charter talking to another prisoner in a prison.