Okay, it really was YEARS ago, and I'm actually not a great person to model oneself on. I have a good memory for detail so I've never needed to revise particularly, and I write very very quickly so I usually have time to put extra in and cover all bases. These are not things that apply to most people, and I realise I am simply very lucky in terms of what examination-style assessment measures. But, honestly, that's still kind of how I work it when I personally sit exams.
A lot of what I advise my students and in my lectures etc therefore comes from observing, teaching different students, tutoring, marking papers, etc. There are general skills that need to be developed - such as memory, structure, expression, analysis, etc - but the rest depends on the individual, including how much work they need to put in. Sorry I don't have anything more straightforward!