If you're doing AQA:
1) Spend a few minutes planning your 9 markers. 2 minutes planning is better than spending 10 trying to think of a point mid-sentence.
2) Quality of life is a big part, so if you can't remember all of the details stick with at least 3. My best ones are healthcare, education and job opportunities because you can tie that in to social and economic opportunities/challenges.
3)Prioritise your revision on figures and details on case studies.
4) I'm not sure if this happened to anyone else, but I got marks off my graph for lines being too thick from my blunt pencil, so make sure it's properly sharpened.
Hope this helps! Good luck, you've got this