Adding to SS ^^
7. Mark that you haven't done the question so you know you have to come back to it.
8. Go throught the entire exam when you first get it (even if you don't get reading time). It's really easy to miss the back page.
9. In an exam number your booklets, and try to keep them in order *woops again*
10. Very importantly LEARN FROM YOUR MISTAKES, whether doing something silly doing a question out of the text book, or something stupid in the exam. You really don't want to make the same mistake twice especially in the HSC.
More advice I should take myself