Yes, absolutely. Model airplane and tank builders do this routinely. I've used various types of flats and satin clears for this, both rattlecan and airbrush. Nearly all have worked well.* I would strongly advise against trying to put on a clear flat with a brush, though. When in doubt, experiment with some plastic spoons, interior tub undersides, and so forth. *Within just the last couple weeks, I have used both Rustoleum Flat clear and Krylon Semigloss Clear--or was it the other way around?--over cheap Walmart Flat White primer with perfect results.