hi there put the window down then get a small flat blade screwdriver where the pull handle is and lift the section with the window switch out
unplug the switch an then there is a 10mm bolt hidden behind the panel undo this then pull the panel away from the door starting at the bottom i think theres 7 clips 4 along the bottom one the hinge side and 2 on the lock side then simply lift up to remove the top section whilst pulling away slightly
you may need to undo the silver bit around the internal door handle but these usually just pop off when you start trying to unclip
if you need any pics let me know