I found it easier if I mounted the front headliner section first. I lined up the front piece with the windshiel molding and slid the bow on the rear of the headliner. Then I could tighten the screws to hold the front inplace. Then keeping pressure on the bow, I lined up the second half or rear headliner and put in a couple of screws. It seemed to work but it helps if you have a second set of hands.
