For that section that I just hand airbrushed the Metalume, I just lay a 1/8 inch piece of tape over the center of it and that creates the pinstripe on the other side of the yellow band.

Here you can see I am doing the same thing all around the outside of the bands. I just lay down a 1/8 inch piece of tape butted up against the tape allready down. You see how it covers up the Metalume that again will create a pinstripe all around the bands.