Understanding the Task
Read the question carefully to make sure you understand what is required. Look carefully at the key words and phrases, which indicate the sort of answer you are expected to give. For example:
Discuss – Give facts and their interpretation from all sides of the argument. Try to arrive at a conclusion.
Evaluate – Give your opinion of the worth of something in the light of its truth and usefulness.
Analyse – Examine the topic in question; find or show the essence or structure of the topic.
Assess – Judge the worth or importance, etc of something; evaluate the subject in question. 
Planning
Now think about the question and how it could be answered. Then write down a plan so that you can see the beginning, middle and end of your answer before you start in detail. The plan will concentrate your mind on the whole of the question, helping you to omit irrelevant information and to answer the question more logically, and it will give you confidence. Keep jotting down ideas as they come to you. Order your points in a logical sequence to form an essay plan.
Writing the Essay
The first paragraph should be an introduction where you indicate what will follow and how you propose to approach the topic.
In the middle part of the essay you will consider all main points and arguments. Write in continuous prose. Make sure everything you say is relevant and answers part of the question. Start a new paragraph for each main idea. Use short, clear sentences in preference to long, rambling ones. Try to support each main idea with examples, relevant facts or legal authorities, making clear where it was that information or quotations you use came from.
The last part of the essay will be a conclusion where you sum up the main points and state your opinions if relevant. You may also recommend proposals for reform of the law.
Make sure that you keep referring to any quotations in the question title.