I would add a reply, but Dino and BobP have said it all. Eventhough Dino and I brush, and Bob dips his baits, and others spray, to each his own. I think the basic solution to the problem of wrinkling is to keep each coat of paint as thin as possible, allow to air dry for a short time, heat set well, and try to keep the DN as thin and workable as possible. Good luck to you.
David