What do i need to do to get A-A* for GCSE English coursework.?

I am currently doing a book called "The Crucible" and am writing how Miller presents the Proctors relationship in Act 2 of the play, in GCSE english, I am doing my coursework, my teacher says to get an A you need "Origional ysis", anyone has done GCSE english and are A-A* grade in Enlgish GCSE or teacher, I would appreciate your help on what I have to do. Thanks :)