I have heaps of trouble making people appear, like if i want a celebrity or friend to appear. Any tips?
Oh and one time i wanted everyone to leave the room.
The room was like all windows, and people just kept appearing!
It was horrible lol.
Thanx 
same problem.tell me if u find solution
you just have to know you can do it. not think you can. i used to have trouble with the right people appearing. i’d want my girlfriend and my cousin would pop up-_-
also it helps if you find a door or something and imagine that when you open it, that person will be standing there. This seems like the easiest method
just be completely sure of yourself that you can do it, goodluck!
Making anything appear is hard if you try to do it directly. It’s just not intuitive for something/someone to “appear” out of thin air in plain sight. The trick to doing it is to have the people appear where you are not looking. The door idea is a good one, although it does require a door at the very least. You can also imagine that when you turn around, the person will be there (make them appear directly behind you). That can be done anywhere.
Hmm yes.
Thanx for all your suggestions 
I will definitely try them out when i get the chance
Call them on the phone and tell them to meet you somewhere. That’s what i do.
When I’m making people appear, I used to say “I wish (name) would come around the corner” and they would. The disadvantage with this was that I needed said corner.
Nowdays i simply say “I wish to see ____” and they walk in from just outside my sight, like they were next to me the whole time.