Sucks that it happened. If you don't want to re-clear everything that you have too to not have a open edge, you can try this. Get some 2" tape. Practice laying it halfway on the panel and then turning the other half back on itself.
Once you can do that smoothly try this. Regular 3/4" tape above that bodyline. Extend it out to the rear of the cab where you have the large depression area. Continue down and around the edge (inside) of that depression onto the bottom. There should be a break line in the door jamb and on the bottom of the rocker. If you have clean break lines anywhere tape them off directly. No 2" tape on them. See the pic for clarity.
When you tape go at least 1/2-3/4" outside of the crease/body lines. Then mask everything off outside the tape line. Then you would take the 2" tape and lay it so only 1/2 of it is on the body. Position it so that it is close to the edge. It may take a few tries to get it positioned correctly. Flip it up and back on itself. This will give you a soft line that will buff easily. It works better than using the foam tape. Do this all around the perimeter. Use some 3/4" tape to hold the 2"tape in place if necessary. Don't try to tape it in one piece. Do the curve area (top line), then connect the sides. Hope that makes sense.
As for prep, after repairing the damage, wet sand with 600. Only enough to remove the gloss. Do the repair, prime it and sand. Make sure you have no sandthroughs. Don't seal the repair, Use some epoxy for primer and paint it within the window to ensure adhesion. In the one open area on the bottom just clear to the tape and go over it. Don't hose your coats on.
For your blend itself, keep it contained. As small as possible. First pass cover the actual repair area. 2nd pass extend out slightly. 3rd pass extend out slightly past your second coat. Once you can't see the repair area you are done.
Ask questions if you have them.
