Think someone is gonna go all Phantom of the Opera on us? Done and done.

[That would be a shitty way to die.]

There should be at least some kind of paper in the tattoo parlor. Maybe tracing paper? I've gotten a few tattoos, and they always have that to make sure the piece is accurately outlined before they ink. And checking it should be split between people. That way no one accuse anyone of fudging the paperwork.