Learn the material well- make sure you understand the plays and novels well. As for poetry, if there are some you just cannot understand, try learning most of them and have a passable understanding of the difficult ones.
Make sure you know the social context well and can seamlessly add it into your points.
What i found that really helped me was that i created a quote bank for each theme and character for the the two plays and the novel, and from that I was able to answer each question well. If you have your quotes and social context sorted, you'll do fine in the question. As for the poems, try learning 3 important quotes from each poem so you can compare.
Also- DON'T WAFFLE! make sure that you streamline your paragraphs so that they are effective at answering the question but also easy to read. Make your point and evidence in the same line, like this:
"Firstly, Macbeth is shown to be extremely guilty as he believes that "not all great Neptune's blood will wash this blood" from his hands, indicating how Macbeth is full of inner conflict and remorse."
That wasn't the best line I've done (it's been a while) but what I wanted to showcase was that you have to embed your quotes to get the top grades, not more "for example,".
All this really helped me, and while I didn't get a 9, I did get an 8. If you use these tips and find your groove, I'm sure you should be able to do it.
KEEP ON TRYING AND WORK HARD!