Whether you are studying a play, novel or poem the key revision techniques are very similar. Firstly, I would say the most important aspect is to familarise yourself with the text itself. For example, with a novel you want to know the plot inside out and be very familar with it's main themes, as well as the charachters and what they represent. Revising poetry is more of the same, however it differs in the sense that your analytical skills are arguably more crucial, as you have less to analyse. As a general point, I would tackle English revision by dividing what you need to know into more managable chunks- use headings for charachter quotes/ themes and structural techniques used in each chapter. Once this is done, practising past papers is key. Firstly analyse the question and break it down- what is it really asking you? Jot down a quick plan to know the direction of your answer, from there your main points should emerge forming the basis of each paragraph. Also, remember to write a introduction and conclusion as this is essential to a successful answer- be detailed, yet concise. After that I would advise you to practice, practice, practice. This is the main way to perfect your exam technique and will ensure you success in your exam!