I'm assuming the hatch is the same as the notch; you have to pull out the 3" wide metal rails that hold it up on the sides and up by the windshield/back window (they are held in by wierd springy clip things and pull straight out; they are tough, but will come).
to take out the headliner first remove pull the fuse for the interior lights. remove the seat belts and back seats so you can get to the big quarter panel trim and lay the over or remove. drop the map light and dome light un plug and remove. next remove the trim piece over the doors(between the a-pillar trim and rear quater panel) which is clipped in. next take out the trim piece at the windshield which also is clipped in, then remove the a-pillar trim which has screws and clips(becareful the clips snap easy). remove the trim piece by the hatch which is screwed in then remove all the screws holding the quater trim panels in and rear speakers. drop the head liner down and angle it out the door reverse to install. I may be missing some small stuff I'm trying to remember of the top of my head but that's the jist of it. best of luck.