The Dos and Don'ts of Painting Glass Bottles

DO apply a spray primer first 

This will help prevent the paint from peeling or chipping. You’ll get the best results with one or two thin, mist-like coats of primer rather than a single thick coat.

DON’T spray a bottle upside down

You’re likely to miss a spot near or on the lip of the bottle — right where you’ll see it the most. A better method is to paint each bottle right side up, propping it up on a jar lid or setting it on an old cooling rack. Any spots you miss near the bottom — and touch up later — won’t be front and center.