Well, they are not really rules, just things to be aware of….
I used vintage papers (including those yearbook photos) and my Instax picture.
About my territoriality : if we connect, I am your friend for life. I am an insecure person though, so I may react in a weird way to new friends getting together without me or if I perceive that we are not investing the same amount of energy in the friendship. In that same way, don’t bullshit me or lie because the truth always comes out anyway.