Here is one essay structure from many. Essay structure in Part 2 of the IELTS Writing Test:
picture from learnline.cdu.edu.au
The structure is very clear! Each of the body paragraphs will be a discussion on one of the points in the question, but make sure you are doing what the question asks. Sometimes you are asked to discuss both sides, so you must write about both.
Before you start writing, come up with a short, written plan with your ideas laid out like the one in the picture, that way, when you start writing, you will be able to keep looking at your plan and your essay will be clear and easy to read and follow, exactly what you want in an essay!