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.
http://www.itute.com/donload-free-vce-maths-resources/free-maths-exams/
There’s also a cheat sheet which is worth having a quick look at:
http://www.itute.com/mathline/mm_summary_sheets_v2.pdf
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:
http://www.vcaa.vic.edu.au/Pages/vce/studies/mathematics/methods/exams.aspx
Mathematical Methods (CAS) – Exams and Examination Reports
http://www.vcaa.vic.edu.au/Pages/vce/studies/mathematics/cas/casexams.aspx
Mathematical Methods Casio ClassPad Solutions
http://www.casio.edu.shriro.com.au/app/view_module_collection.php?id=5
Hope this helps!