You have lots more to do!
The grab handle has rectangular plastic covers on both sides. You have to pry those off to expose two screws that hold the grab handle and the door panel.
The soft part of the arm rest slides back with enough force and that will expose more screws.
I believe that there is a screw underneath the area where the arm rest is. That should be visible with the seatbelt mechanism cover removed.
The plastic grommet around the seatbelt pops off to reveal another bracket with two screws.
You'll have to pop off the window handle. Those are usually held on with some kind of retaining clip.
There is one screw under the plastic cover where the mirror mounts.
I think that should about cover it.