Pry off the cover behind the door handle and remove the two screws.
Sedans will find 2 other screws below the armrest. Coupes will have one on the top forward of the panel, and one on top of the armrest.
There are plastic clips securing the panel to the door along the sides and bottom. Pull with your hands or use a tool to pry with.
Once you've released all of these clips, pull the panel up while supporting the narrow trim piece that sits against the inside of the window. This trim piece might come out with the panel, and that is okay. If it does, just remove it from the panel once it's off completely and push it back down onto the door.
With all the clips released, hold the panel with one hand while disconnecting all of the wiring harnesses. Be careful not to twist or stress the door handle cable where it attaches to the handle assembly.
Supposedly you can lift the door handle cable out of the metal seat that keeps tension on the cable. When I removed my panel it did not feel like it wanted to work like that, so I just removed the metal seat from the handle assembly. On the back of the panel there is one screw that holds the handle assembly to it's bracket, remove it and the handle assembly can be slid out.
Remove this screw.
Snap the green clip (could be a number of colors) off of the cable and pull it out. The panel should now be completely free of the door.
At this point, there are some screws that hold the window switch to a bracket. It's pretty obvious what to do once you have the panel out.