2)Know that your dreaming?
3)Do you have all your 5 senses?
4)Can you wake yourself up during a nightmare?
5)Are you looking at yourself in the dream or are you living the dream?
as for me:
2) 95% of the time
4) 90% of the time
5) I would say that I am watching myself in the dream 95% of the time, yet I can still feel everything that happens.