I got A+ for my folio last year and i thought ill give some tips for those that are gonna do Art next year.
Sorry i founded this forum a bit late =p.
You pretty much gotta stand out from your cohorts so
1. Do something different but not too crazy. Know your Limits to your own ability.
2. Show some research, i inserted gallery artworks and pamphlets and expressed how it has ' inspired and influenced me and how it contributed to my final ' even if some didn't contribute to your final, note it in anyway and say why you took a different perspective and why you preferred another one. It could also lead to another idea. Chain reaction going on.
3. Number your pages, if some things connected combining random ideas. Show them and express them clearly.
4.Use a lot of art terminology, and Highlight them.
5.For your finals its good to do a extensive annotation and meanings and messages to them.
6.Make sure you used various mediums and methods and experimenting.
7.If you changed your idea half way through the semester, its okay as long as the previous idea helped consolidate the new one.
Hope this helps.
ps. some other things i did was that i branched out of the old fashioned paintings and stuff, i went more modern and did animations and cartoons.
The exam is a killer for those who suck at English like me, i only got a B+ for the exam, it felt like doing Two English exams.