Going by most Subi doors I've pulled apart there is usually a screw behind the door pull handle & two behind plugs in the arm rests & possibly one at the front of the trim, you will probably have to slide the cover around the handle back or forward to get it off then grab the trim from the bottom and gently but firmly pull it outward to undo the clips, you may also have to hold the inner door handle open to slide the trim over it then once it is loose push it up so it comes out of the window track & then unplug the wiring harness.