Ive take it out b4, quite tricky.
Tiny flat head. 10mm Sockets
Use the tiny flat head. Be real delicate with all the plastic sockets that holds the door trim and the little legs that holds the inside door hinge.
Once that is off, u should still have the plastic sheet for sound proof purposes. sorta take it off following the edges. Dont break it...you will need to stick it back on.
Inbetween the door, where the window sits, right at the top there should be two cushion lookalike things. Undo them.
I find it easier when the window is half to all the way down....gives you more room to work with. There should a bar(around 1.5-2cm wide) running across the door attached to the rails where the roller sits. There should be 2 10mm bolts. Undo them...after that it should slide out. It gets abit tricky when your sliding it as well. Slow and steady wins the race here.
I might of missed a few steps...but its along the line of that! If it sounds complicated or lack of tools. Take it to a panel beater or something
GL