brush up on your technique analysing skills. that essentially is what comprehension is about - analysis. so things like poetic techniques (the stimulus in the paper always includes a poem), images (which they also incl), short stories etc. familiarise yourself with them.
the points they give you that are written on the side is also an indicator of how much you should write/what you should include. e.g. 2 point question = 1 mark for technique + 1 mark for telling the audience about the technique. 4 point question = 2 techniques and brief discussion of these techniques. use a highlighter !