Upon further review of some reference pics, I had to add a little curve leading up to the bottom of the rear window. I added a piece of .060 styrene with the flat of it parallel to the angle of the rear pillars. Then I began the filling and smoothing process! Much easier on a 1:1 car! Had to be very careful not to sand on the top edges of the rear quarters. I covered them with painters tape during that process. As soon as this is done, I’ll add in the window trim with .040 styrene square rod.