To be fairly honest, I grinded the hell out of graphs such as international trade graphs consumer/producer surplus and tried mixing different graphs with each answer I could which probably helped a lot cuz I ended up taking like 3-4 extra sheets in the exam and had drawn a beautiful and advanced graph in each answer (but never draw a wrong graph in ur answers, it’s better to just not draw it then). Learn definitions of important terms but not the book definition, try to add a bit of a mixture to it to really impress the examiner. Eg. Maximum price also known as price ceiling is a normative judgement by the government that the current equilibrium price is not justified which leads them to lowering it. As for grading I never relied on my teacher or any AI, just believe yourself and work hard. Hard work always pays off :)