Hello
So personally I would choose the essay that focuses on character learns over the course of the story, but do what floats your boat. The first thing that you want to do is make a outline. Get some information and just do a rough draft, it doesn’t have to be perfect! Get all of your information and put it together, organize it where is need to be. So, you should have a intro, a body, and a conclusion for a basic essay.
Hope this helped! Also, is this on a particular story if so let me know and I’ll write up a outline. Something to use for a guide! Let me know if you need anymore help with this… Good Luck!