Whether you are using an airbrush or hand-brushing, apply multiple thin, even coats and let the paint dry thoroughly between coats. Do not use a single thick coat. This can obscure the turboshift effect. If the paint pools or you see thin white areas, you put it on too thick.For Turboshifts, the shift will start to come out more with each new coat that you apply. Usually, it takes 2 to 3 coats to achieve maximum effect.