I would like to recreate the vintage look on a clip. The thing is, it must look convincing, so not just throwing on filmdamage and hope for the best. There will be alot of art direction so that part is pretty much done. As for shooting and editing/composting, what should I do to get it just right?
should I slow down to 18fps? The time to replicate is pretty much the beginnings of motion picture use. I will be shooting with a XL2 Pal, so 25p.
any advice is greately appreciated?

Difficult to say. Do you have an example of the kind of thing you would like to emulate?