you need to take the door card off first.
there are 2 torx bits - one on the dash board side of the door card and one in the grab handle. take them out then pull.
take the inside base plate off the wing mirror (the thing that goes around the adjuster, just pull
then take the three torx screws out whilst holding the mirror then it just pulles out.
to take the glass out you need a thin flat headed screw driver. look inbetween the glass and the bottom of the wing mirror and you should see a wire. flick the wire off the runners and the glass will pull out.
then spray away my friend