You should either frame your ketubah before the ceremony (with a removable backing so that you can sign it), or you can keep it in the packaging used for shipping.
We will include an archival ink pen when we send you your ketubah, so that you can be sure your signatures will last as long as the artwork.
Be sure your framer uses acid-free, non-buffered, archival quality matte, and ask for UV protected glass. Do not have your ketubah dry mounted. Hang your ketubah away from direct sunlight.