Need tips for headliner install

Thanks all for the tips. Redfish, I just removed the seat last night, and I would not have thought about the anchor points, thanks. well one was missing so I had to take it off the parts car and weld it in place.
Can the liner be put in with the rear window in place? I have the windshield out. I know it would be harder to pull tight but the barbs are not covered by the window gasket. any thoughts? Thanks again folks.