Breezy,
Had similar experience with U-Haul years ago when I needed to put a hitch on an Eclipse. They had one but the installer just couldn't get'r done. I ended up doing most of the work for him.
The easiest way I've come up with doing a How2 is to create it in MicroSoft Word (including pictures). Then when done, save it as a pdf. A pdf can be inserted into forum threads or submitted to the How2 section. I like a pdf version so that I can print a copy to take outside with me when doing the work.
IIRC, Tone's writeup on the hitch install was fairly detailed about the rear cladding removal. I'll see if I can find it & post it here for future reference.
Tom