As they said just behind the metal handle you pull to open the door, you will find a little black plastic piece. Just insert a little screwdriver on the edge of it and you will be able to pull it out. Once you pull it out you should find ONE screw left that is holding the door handle/armrest assembly on. Once the door handle/armrest assembly is off , you can run a screwdriver under the bottom of the door panel. By pulling the panel away form the door you can get an idea of just where all the fasteners are. This will allow you to use the screwdriver as a pry tool right near the fastener to prevent you from bending the panel and also breaking the clips. As Jeffsr said, then you can pull up and out.
Once you have it off, it will all fall into place real easy.
84 500SEL EURO 87K
85 300D 267K (and still goin' strong)