There should be a removable Trim piece on the top and another on the bottom of the Door.
The Face Board should slide right out of the channels on the sides.
There may be a spot or to of an adhesive between the Door and the Facing Panel, which will require a bit of force to break free. Just don't damage the Door Panel by using too much leverage.
Rob & Jean
98 Dutch Star Diesel Pusher ..07 Honda CRV AWD