Remember that the key to performing well in the exam is practice.
I just wanted to share a free resource I stumbled across when looking for practice exams and solutions for my students a few years ago. You probably have plenty already but it never hurts to have some more.
There’s also a cheat sheet which is worth having a quick look at:
And hopefull you already know about the VCAA past exams papers for Mathematical Methods Units 3 & 4:
Mathematical Methods (2002–2009) – Exams and Exam Assessment Reports:
Mathematical Methods (CAS) – Exams and Examination Reports
Mathematical Methods Casio ClassPad Solutions
Hope this helps!