Once you have both bolsters out you need to fold the seat back down.
The trim panel that goes around the trunk opening facing you is held on with small clips. You only need to remove the top row of clips that go all the way across and one either side that is a bit lower down. The pictures below should explain where we are looking. I've not pictured the ones all the way across for you as you should get the idea.
Clip wise there are two sorts of clips. One has a phillips screw head on it and one just has a round button type pin in the centre. The screw type release by turning the screw head about 1/4 of a turn. The centre will pop up a bit. I then grab the screw centre portion and pull up gently on them to make sure the main clip is fully released. I then pull the complete clip out. I don't try to remove the centre screw portion of the clip. Once loose the whole clip assembly will come out.
On the round button pin type just get a small screwdriver or pointer of some kind and gently push the centre pin in. Once it is popped in just a little way the whole clip will loosen and come out.
Hope I've explained that well enough. Just don't force anything as you will break the clips. If you've removed the tension on them correctly by following the above then they should easily come out by hand.