Hi
I got an A* in both my Art and Graphic design A level courses.
The most important thing is to check that you have met all of the criteria…you might need to go over this with your teacher.
You need to do a lot of research into many artists and do more than one sketchbook if possible.
I completed 3xA3 sketchbooks for my Graphics and 4xA3 sketchbooks for my Art as well as producing multiple larger pieces outside of the sketchbook.
The presentation / exhibition was also part of the grade, but this varies for which board is governing your exam. I did mine through Pearson’s Edexcel.
There was also an essay to submit…it’s possible to lose marks at any point along the way.
Overall I would say it’s really important to show your influences, explain your process with lots of annotations and descriptions and to experiment as much as possible (using various mediums, techniques and styles).