I'll bet you've got it off by now. I've had the door panels off my 93 SC 300 a couple of times in the last month or so, shocked with how simple it was (the second time, any way.)
There is a screw behind the door handle, has a little plastic cover to hide it from view. Cover pops off with a flathead.
If you got that one and still can't get it off, hmm... 2 armrest screws, two screws under color-matched caps along the leading edge of the door...
There also might be a little pressure from the switch panels, but they pop out.
Good luck.
Oh, wait!
Might be the cables from the door handle and the lock hanging you up. Sitting in your front seat, you lift the door panel and a few inches from the frame, then, looking over the top between frame and door panel, you'll see the quick releases for the door handle and lock.