After you have done enough research on the main theme of your exam paper and generated some ideas, start doing some basic sketches. Think about the colour spectrum you might use to emphasize a certain idea, emotion or object. Which media? Which style? Try researching different art movements- Impressionism, expressionism , etc. Take an interesting section of your proposed piece and complete it in different styles to see which works best. Add annotations and add them to your sketchbook under the title “Experiments in media” or “Development of Ideas”.Once you have worked out which style works best for you, do more research on it, find some artists who worked in the same style and gain inspiration and knowledge of technique from them.