In the story the narrator keeps going to the old man's house to see his eye. He does this even night before he kills him. This is again and again because the narrator keeps going to stalk the old man.
On the last night the narrator creeps into the room and suffocates the old man by putting a bed on top of him. Then eventually the old man dies and the narrator is very happy. This is the climax because it is the turning point of the story.
I killed him how is his heart still beating
They will never know I killed him!
The police come over and start looking around the old man's house, the narrator isn't nervous at all. But then the narrator can't handle the anxiety of the old man's death so he turns himself in.
They know I killed him!
The narrator gets really stressed so he turns himself in to the police. This is an example of character contradictions because you wouldn't except the narrator to turn himself in.
I did it!
The main conflicts are the narrator getting stressed because of the old man's eye and the narrator being about to hear the old man's heart beat. These are examples of conflicts because it shows the problems in the story.
The narrator feels very confident that no one will suspect him of killing the old man. But then he starts to hear the old man's heart beat again. This is an example of the falling action because it leads into the resolution.