Another good tip on installing the headliner is to put all the screws in (dome light, coat hook, rear view mirror, sun visers etc) and screw them in as far as they can go (BE CAREFUL NOT TO HIT THE ROOFSKIN ON THE CAR) and then install the headliner like posted above and then locating the screws will be super easy once the headliner is installed. Trying to find the holes when not doing this method can be a real PITA.
Hope this helps