2. Apply a coat of gesso to the glass. Gesso is a white acrylic primer that will help the paint to adhere to the glass. Let the gesso dry completely according to the manufacturer's instructions.
3. Paint the glass. Use acrylic paint to paint the glass. You can use any color or technique that you like. Let the paint dry completely according to the manufacturer's instructions.
4. Apply a coat of varnish to the glass. Varnish is a clear acrylic coating that will protect the paint from chipping and flaking. Let the varnish dry completely according to the manufacturer's instructions.
Here are a few additional tips for preventing acrylic paint from flaking off glass:
* Use high-quality acrylic paint and varnish.
* Apply the paint and varnish in thin coats.
* Let each coat dry completely before applying the next one.
* Avoid painting or varnishing the glass in direct sunlight or in humid conditions.
* If the paint or varnish does start to flake off, you can remove it with a paint stripper or by scraping it off gently with a razor blade.