With your headliner centered and the rear bow retainers in place, you can hook the retainers to the rear bow. Make sure the hook end of the retainer passes around only the bow and through the bow listingNOT the headliner material. Pull the headliner forward, rotating the bows up toward the roof panel. Glue the leading edge of the headliner to the windshield lip. Secure the glued area with clamps or sections of old windlace until the glue dries.