While holding a lit candle go into a room that has a mirror and gets pitch dark, then turn out the lights. Spin around three times in front of the mirror while slowly chanting 'Bloody Mary Bloody Mary Bloody Mary. Then… look in the mirror and you will see the pale face and glowing eyes of Bloody Mary staring back at you.
The reason we chose Bloody Mary is because me and my friends cramped ourselves into a small bathroom in my friend julian's House. We ended up saying Bloody Mary about 20 times or so for anything to appear. When we did finally see something it started out as a green glow then the darkened portrait of a face became more visible, by that time half of us were screaming so we knocked each other down trying to get out of the bathroom and then I flipped on the light.