1) What grades did you get?
12 A*s, 2 As
2)How long before the exams did you start revising?
Biology, Chemistry, Physics - just before Easter holidays
Maths - 2 weeks before
English language - night before
English literature - Easter holidays
History - Easter holidays
Geography- night before
Latin - Easter holidays
French - night before
Spanish - night before
ICT - night before
RS - morning of the exam
It all depends on how confident you are about the exam, how good your teacher is and how important the exam is to you!
3) How long did you revise for?
3 hours a day weekends, two hours school days (maybe a little less?)
4) Any tips you would give yourself to get better grades?
Don't stress out too much!
You should totally do your play! It will give you some time to enjoy something other than revision. Don't stress about revision either - you'll perform worse. Don't listen to people saying they are starting to revise now because you won't remember it by the time your exams come around. Just relax for now, do a little revision for your mocks, and have fun. Revision is tough at GCSE since it's the first time you've revised properly for public exams. Enjoy the relaxation time you have now and don't think about revision just yet - at least not until your mocks.
Good luck!