Best tips to get an A* in A level edexcel business studies?

Hi,
What are your top tips?, how do you answer 20 markers to get 16-20 each time?

I answer them as follows:
As 20 markers are usually choose between adopting approach A or B to achieve X (market share/building employee relations etc)
5 para
- positives for adopting approach A
-negatives/drawbacks for adopting approach A
-positives for adopting approach B
-negatives/drawbacks for adopting approach B
- Conclusion that clearly states why one option OUTWEIGHS the other I usually use the phrase While …(positive on the one your not picking) this is outweighed by… (the option your picking having greater potential - throw in some application here (a stat or new info maybe). Then “Although this depends on….”(the forecasted predictions being accurate or the magnitude of the success of "..." etc)
For each of the 4 main body paragraphs I structure as follows.
Main arg(try include some application here straight away). As a result… This leads to… Therefore…. (at the end of this chain link back to the goal "X"
Then you are doing 3 chains of clear analysis.

Thank you!! Essentially for each paragraph do you just stick to 1 point and just expand on it properly. So for example say if the question on picking between PLC and Ltd, for your PLC paragraph would you just stick to the point of 'with PLC you have access to stock market for additional capital' and then just use chains of reasoning and application