It's an an obvious one but the earlier you get cracking with your revision the better!
You don't have to go crazy and start revising as hard as you possibly can in the summer holidays a year before your exam! This just isn't FUN at all.
Build up momentum slowly and then hit your working rhythm in the lead up to exams. You should be doing your best work just before you take your exams. It's all about peaking at the right moment and avoiding burnout.
All the techniques The Exam Coach way suggests you use on exam day to improve your performance will be for nothing if you haven't laid the necessary foundations and acquired the understanding beforehand. You need to use TIME sensibly in order to do this.
Always give yourself plenty of time, track your progress and keep your eyes on the prize!
This is where PLANNING comes into play!