Play the examiner
Take a particular question from a past or specimen exam paper and imagine that you are the examiner who set it. Note down which particular part of the course you set the question to test, and how you would distribute the marks. Also, note the potential pitfalls in answering the question, and what you would be looking for in an exceptional answer.
The examiner is looking for relevant and concise answers, which show that you have grasped the main concepts and can both explain and use them in your own words.