What to do if my backpainted glass contains imperfections?

Painting glass can have flawed results for a number of reasons – improperly cleaned surface, dust, air debris or even small insects can get caught in the paint while you apply it. The best way to deal with these flaws is to wait for the paint to finish drying and curing. Once done, gently sand off the paint at the location of the imperfection (a fine sandpaper is suitable for this, look for 220-320 grit sandpaper). If the sanding causes the glass surface to be slightly occluded, don’t worry. When the imperfection is gone, clean the area once again with paper towels and rubbing alcohol. Now that the surface is ready, it can be repainted with any tool of your choosing – spray gun or roller. (Please note that the color tone may change as the paint dries) – even if the wet paint tone seems lighter, it will blend perfectly once it’s dried and cured.