Not meaning to change the thread, but I can't help notice your fender inner sections don't have full coverage of blue paint (I can see primer along the metal folds).
That looks pretty 'factory' to me and nice. Was it like that originally on the one you restored? Being they were sprayed by hand I can certainly understand how that final finish came about.
First I was fortunate enough to have access to the car Lloyd currently owns for about 5
I set them up on a "buck" as described by JohnZ with about a 2" gap between the panels, and let the paint fall where it did.
I am painting a 69 X66 conv for a customer now and the same will apply for it, although with silver over gray primer it is difficult to tell where the transition occurs...
Here are some firewall pics of the silver laying over the gray...