All stained glass starts with a pattern, which is drawn up to the full size of the finished piece. Glass is selected, cut and fit using a light table to keep track of how the finished piece will light. Painting is done with powdered minerals, which are fired into the glass to become permanent. Details are worked into the paint through scratching away and manipulating the dry pigment.
This short video shows how a layer of color is applied to the glass. After painting and firing the more detailed line work, color is brushed on and then quickly spread and matted into a thin layer. This can then be manipulated, removed to create highlights, and fired. Several layers and firings may be used to build up a tone and finish a piece.