To paint wine glasses, gather rubbing alcohol, small paint brushes, skewers, acrylic paints, varnish and aluminum foil. Placing the glasses in an oven for 20 minutes at the end of the process allows the paint to set.
When first painting glasses, it's a good idea to purchase low-cost products. Before painting, clean the glasses with rubbing alcohol, and allow them to dry. Using small brushes for larger details and skewers for finer details, paint the design on the glass. Once the paint is dry, use a thin layer of varnish to glaze them.
After the glaze air dries, line a baking sheet with aluminum foil, and set the oven temperature to 350 degrees Fahrenheit. Place the glasses in the oven immediately to prevent them from becoming too hot and cracking. Remove the glasses after 20 minutes.
If you want to refine the process, wash your hands with warm soapy water prior to painting. This reduces the risk of grease coming into contact with the glass, which in turn makes it easier to paint. Additionally, a water-based paint such as Folk Art enamel makes painting easier. One way to make patterns easier to follow is to draw them onto a piece of paper that fits inside the glass, firmly fix it inside the glass and follow its outline with paints. Additionally, placing tape around a glass makes it easier to create straight lines.