I did not have any photos of roughing out the RH side. not sure if I lost them or just didn't take any. At any rate.. here we go on the left side. Game plan is to rough out the entire panel in 80 grit with the longest board that will fit the particular areas. The 18" board on the roof is probably used most often.
For the top side of the quarters and the doors I have a 30" board.
First one or two rounds with Bondo, then a full spread of polyester glaze after.
I sometimes use an air board for the very first rough cut but after that I do everything by hand with Blocks... start to finish. Never touching it with orbitals.
For the roof seams I first welded the plug welds and inner structure. Then welded a solid bead at the outer joint, slowly building up to a fairly wide bead. 3/8" to 1/2" wide (the raw fit is pretty wide and deep ). For these joints and the seam weld at tail panel above the taillight I used AllMetal filler for the base work
Spreading filler across the entire area then block sanding the majority off to get it straight.
I had also installed all the trim nail heads into the rear window jambs and spot welded them from the back sides before installing the 1/4's.
Not pretty at this point... many rounds and hours to get it straight.