Hey Frax,
For the opaque yellow areas and their curved borders, did you free-hand cut the masking there after it was laid on? There's tons of info/posts on playfield touchups in general but I don't recall ever seeing any how-to's on cutting the masking on curvy areas so the result doesn't look like it was done by hand. I'm aware of french curve tools and such but have always been curious about how it's done my most and how the professional restoration shops do it.