To remove the rear hatch you neeed to open the hatch. Remove the 4 push tabs(plastic) then take off the door panel. Once the door panel is removed, you'll need to take off the wiper motor so you can get to the bolts that hold the trim piece on. You can let the motor hang you won't do any damage to it.
After then you can remove the 4 bolts that hold the trim piece on.
Put back together in the reverse order.
Hope that helps