Where does the tissue paper go in the invitation?

i think it goes on top of the invite.

found this online

'Start by placing your invitation face-up in front of you. If you want to use the tissues, place the tissue over the writing. The tissues are absolutely not necessary--they were originally packing material used when engraving inks were oily and wouldn't have dried by the time they were shipped, so the tissues kept the inks from smudging until they dried. They were *supposed* to be removed before assembling the invitation for mailing. However, over time, using the tissues has become 'proper,' so you're welcome to use them if you would like. If you have printed your own invitations on your own printer, you might find that the tissues do indeed serve a purpose--printer inks often *do* smudge during mailing.'assembly instruction