Door panels are not that hard to remove. You just have to remember that after you remove the screws to the armrest, the screw behind the inner door handle, the two screws on the chrome piece at the door striker, that the panel is HUNG onto the door by these very brittle pieces of plastic that fit into holes in the steel panel of the door. DO NOT YANK IT OUT!! Gently push the panel UP from the bottom and they will unhook from the door.
If you yank it out you will snap the plastic hooks and then it will be very difficult for the panel to attach to the door.

Take your time. The plastic pieces get brittle with age.

John

P.S. I believe that are two more tiny screws that hold the plastic piece on the back edge of the door by the window. You can see them when you open the door.