Open each door and at the same level as the door handle on the back of each door is an oblong hole with a rubber grommet in it. Remove the grommet and you will see a lever/latch that secures the outer door handle cover to the outer door skin. Use a long narrow blade screw driver through the oblong hole to move the latch to one side to remove retention of the handle cover. Installation is reverse of the former :-)
HTH,
George