I am an A* student, and I can tell you exactly what you need:
What you need to write:
5 marks- 3-5 point
7 marks- 5-6 points
8 marks- 7 in total
Significance in 7 mark Qs ------ Points need to be linked
Significance in 8 mark Qs ------ For against and conclusion, and the coclusion has the be damn good
How to make a point:
1. Write down the point.
2. Add a fact to explain it.