First tip - use quotes and talk about their effect and relate this to the question - this is key and it will get you into the top grades
e.g. this shocks the reader, and subsequently aids to make them support the writers argument against/for......
Second tip - look for techniques and group them together so you don't repeat what you are saying - saves time and gets you the same no. of marks
e.g. the author use of vocabulary to describe the encounter of the bear, 'terrifying...etc' + 'another example' emphasises to the reader the sheer terror of the event. The author continues this throughout, to further this.
Final tip - be concise and structure your analytical answers (not summary answers) as the author - quote(s)/example(s) - effect - link to the question (only a few words)
For any writing questions read through what you have written after every sentence and seriously plan to ensure that when you are writing you know exactly what you are going to say - then it will sound more natural and it will be better.
Start with a sense of urgency and GOOD LUCK!