exterior sail trim? triangles on rear bottom corner of window?
if so it is pretty straight forward, you will need some allen head sockets or keys.
phillips screwdriver for the door trim, screws on front inner edge and under handle covered by some trim.
remove these, trim slides up on hooks, pull away gently and rest on floor.
remove inner sail trim py popping in and forward, remove foam, exposing allen bolt.
trim may come away once free but you may have to crack open the door from and window chassis (two allen bolts on rear inner edge) just crack don't remove!
refit is the reverse of removal