If the paint is "beading," or "wrinkling," you've got adhesion problems. The pickguard probably has some oily residue from the molding process or your fingers. Clean it with Comet before you paint. It'll dull the glossy finish & give the paint some "tooth" to bite into. If you can't wait for it to air-dry, make sure you use a tack-rag to pick up any lint/ fuzz left behind from whatever you used to dry it. You don't want that stuff in your finish. The lacquer should be chemically "hot" enough to take it from there.
If you've got "orange peel," either the paint is too thick, or there's too much humidity where it's curing which causes the paint to gas out at different rates. You can knock the bumps back with 400 grit wet/dry sandpaper (wet), and overcoat with a clear gloss.
Actually, I'd probably overcoat anyway to protect your paintjob. Unless you play fingerstyle, a pick will mar the paint PDQ.
MAKE SURE YOU'RE USING A CLEAR COAT THAT'S COMPATIBLE WITH THE PAINT! Lacquer/lacquer, poly/poly, but DON'T mix them, especially poly over lacquer. THAT will definitely cause "wrinkling" in the paint underneath.
Also remember, laquer gasses out enough to handle in about 3 days. Fully cured & rock hard in about 10.