Greys

Grey make up seventy-three percent of all reported alien encounters.

Greys are typically described as having light to dark grey skin,small hairless body's with a large head and wide black eyes. 

Like many aliens they possess psychic and interdimensional traits so the best way to contact them is through intent and ritual setting 

 

If you would like to safely contact them just to visit or eventually invite them into your life then I would first recommend that you plan out a few different dates ahead of time. find a location where you can be isolated and have an open view of the sky, your going to want a night with no clouds so you can see the stars this is why it's a good idea to have a few different days planned out because it can depend on the weather. 

Write out this sigil with a peice of paper and black marker 

Then burn it in the spot you are going to be waiting for them. 

Once the intent has burned you don't gotta do anything else but wait. A good peice of advice is act as if your the aliens who just got invited to meet a stranger so don't wait there with your phone ready to take a picture or some sorta weapon to hurt them be open to them because you are the one inviting them after all.

Sigil 

I would recommend waiting for at least an hour when I did this I went out at 11:30pm and started seeing their ships at 12:40am and I don't remember them actually landed just them on the ground mid conversation with me then they left. When I checked the time it was close to 3am. 

 However it was a positive experience or interesting to say the least.