Something I'm trailing is writing the name of a topic (so if I was revising Chemistry, it could be salts, akanes etc.) then underneath that writing everything that I remember about that topic. Then once that's done, using the revision guide to find out what I had forgotten or didn't even know to begin with. This has helped quite a lot actually as it really makes you think and therefore it will help you to do the same thing in an exam (I'm hoping)
For English lit I'm going to make cards with characters and themes on from animal farm and omam and then just some facts about them to learn for the exam, for Lang I have no idea what to do
For maths I'll just do plenty of past papers and then revisit the topics of whichever questions I get wrong
Science will be primarily mind maps
Geography will be mainly flash cards for any basic info like definitions and such, but more in depth sort of fact files for all the case studies (melodramatic sigh)
German = no revision lol
PE will just be reading and making notes from the revision guide, although the exams are easy so no real issues there
So yeah, a few different techniques, some new ones to see if they work, there's no harm in trying I guess