to take out the liner, all the side plastics that hold it up have to come out first, than all roof accessories such as lights and such have to come out as well, and if it has a sunroof all the trim for that as well, once everything holding it is taken ut, it just kind of hangs there,,
it is a fairly involved process to get them out, , take your time if you're going to put it back in, so that is doesn't get creased or cracked,,