Shells that don't have the outer protective film?
What do you guys do when painting shells that don't have the protective outer film on them?
I've tried cling film, which does a good job of keeping my fingers from smudging it, but isn't a very good surface on which to scribble my design with a Sharpie.
Also, do you tend to put the window masks on the outside and use them as a guide, or on the inside and spray/sponge the liquid mask over the top of them?
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