How do you beat septhiroth on kingdom hearts 2

1.Equip= the oblivion key blade,equip enough elixers and hi-potionsas possible.and you need to be at lv.69!!!!!!!!!!!!!!!!
2.you always want to keep your finger at the triangle buttan just to be safe.
3.each time you think he's going to attack use eather glide,guard or quick run.
4.when he's on low life he's going to try to suck all your life away and mp
5.also doooooooooooooooo nottttttttttttt dieeeeeeeeeeeeeeeee!!!!!!!!!!!!!!!!!!!!!! If you get close to beating him and you die you will get soooooooo ticked off!!! (trust me)