How should I structure my paragraphs in an essay?

You can use PEAL to create in depth but to the point paragraphs. Write P.E.A.L at the top of your page as a checklist. P stands for point, so the first thing you must do it make a point about your text that answers the question. Then you must provide your E, or evidence. This just means what, in the text, proves your point. This would usually be in the form of a quote. Following this comes your A, or analysis. This is telling your reader why this quote had gave you that interpretation. To close your paragraph you must L, or link back to the question. At higher levels you may include alternate interpretations, or complex analysis that gives a detailed answer to the question. I have created a very simple paragraph as an example of the structure.
How does Steinbeck present Curly's wife in 'Of Mice and Men'?
Steinbeck presents Curly's wife's sexuality as dangerous in 'Of Mice and Men'. This is clear in the repetition of the colour "red" in association with her. This colour often denotes passion and high levels of sexuality. It also connotes danger. Therefore, Steinbeck links her sexuality with danger. Consequently, in his use of colour, Steinbeck presents Curly's wife as having a dangerous sexuality, which foreshadows the tragic outcome of Lenny's desire for her.