Well if you're going to write an essay you should start with a good solid intro moving onto the three body paragraphs led by a conclusion wrapping everything up. If you need help with an essay, what's it about? I can't really help you with writing it, but some tips I can give you are taking notes on important things about the topic, what's the theme, main idea, and so on. Hope this helped ya buddy :3
An anticlimax is a disappointing (or unsatifying) ending to an otherwise exciting series of events. Example: think of an action movie that just ends without wrapping up the loose ends or leaves too many unanswered questions.