at a time close to midnight go to a forest.

make sure to go deep into the forest.

bring a flashlight. DO NOT BRING A CAMERA OR ANY OTHER THING YOU CAN RECORD ON!!!

as you walk keep your head down. if your flashlight starts to flicker slenderman is watching you.

you may also start to experience symptoms of the "slender sickness" like headaches, nosebleeds, numbness of hands and feet, etc. if you start getting these symptoms DO NOT RUN AWAY!! just carry on.

when your flashlight flickers or you get the symptoms stop walking.

close your eyes tight. DO NOT OPEN THEM!!! no matter what!!

you will begin to hear slendermans voice in you mind.

you have to answer him truthfully.

you may now feel slenderman touch you, he may put his hand on your shoulder or rap his tentacles around you. he is examining you. he will not kill you unless you open your eyes.

if slenderman thinks your worthy he will mark you. 

if you are marked you will pass out.

when you wake up you will be in your room.

pack things you will need, my advice would be some spare clothes, water, food and a weapon. i advise to to take an electronic as you are not allowed any contact with your past life.

finally the next night around the same time you went to the woods you will be summoned by slenderman.