I agree as if it is not done right you get paint from the lower onto the upper. That ruins it.
The XK120 Jag is a harder masking job due to all the curves.

I have masked and sprayed the light blue and unmasked it. Here we go.

One or two touch ups and I can assemble. I also have to clean the paint off the back rivet. The base is painted Satin Black and is drying.

very nice! Is that a spider's web in the window? If so, it is now preserved for life

That could be but more likely dust from my spray bench. Happens seldom and comes of easy with no marks.

Have not looked at that cob web yet but I did paint the rear lights red. Now I need to find a better dolly wheel as the one I have is pretty gouged. Post #8 shows it fairly well. I am waiting on my order as the rivets I need are on that order. Should be here in about a weeks time. In the mean time I have started on the Dinky 40H Austin London Taxi and the Spot-On #104 MGA. I found not problems with the wheels that could not be fixed. Threads for these starting tonight.