1. Taped a line about 3//32" out onto the windshield glass, using one layer of electrical tape.
2. Began feathering the edge of the fairing, using an 80-grit hard block. It seems like this technique should work fairly well. I intentionally allowed the windshield surface to be scuffed, because we will be painting up onto the glass there.
3. As a test, I also removed some of the protective plastic on the turtledeck skin and sanded along the paint edge to do some feathering there, too.