you have to undo the seat belt mount that goes through it, then pop off all the clips around the edge. the ones along by the top by the glass go up and the the ones by the doorjam go towards the front of the car if that makes sense ?
then it will be loose but the front seat belt mount will be stopping it, youll need to undo the black thing thats below the B pillar, like a thin black tube with a disc on the end ?
it has the one visable torx bolt you can see and the other end just sits in place behind the door card, youll have to fiddle with it to get it off
think that makes sense lol, sounds harder than it is, just the last seat belt mount thats abit fiddly