Basic glass Coloring Techniques
Tape your film or glass over your miniature printed stained glass window design to hold it perfectly flat. Fill in areas of color using glaze pens, markers or stained glass paints.
If you are coloring onto a printed overhead sheet, clean the back side of the sheet with soap and water or alcohol (make sure the printed side doesn't get wet or damp or it may run!) Color on the back side of the overhead sheet, the side which is not printed. That way the printed design lines will cover any slight mistakes you make.
Fill in colored areas which are not adjacent. Allow the color to dry before coloring the area which borders it, otherwise the colors may bleed.
For deeper colors, apply a second coat of ink or paint to the section after the first coat has dried.
To Create Marbled Glass - apply a small patch of opaque white glaze to the area you wish to marble, then apply small patches of color and stroke them through the white glaze with a blunt toothpick or pin. Use the toothpick to move the marbled glaze to the edges of the fill area to completely cover it. Allow to dry (opaque white glaze pens seem transparent until they dry)
To Create Streaky Glass - use two closely related colors to fill the area and allow them to bleed or run together. If you do not have a second closely related color, apply your color to the patch you wish to appear streaky, allow it to dry, then apply a second layer in streaks on top of the first (don't completely fill the area the second time).
To Create Old Clear Glass- Fill the area with clear glaze and allow to dry. Apply a second coat thinly to the first in a swirl pattern, or streaks (do not completely fill the area with the second coat). When viewed from the front of the window it will appear to have streaks and swirls in the clear finish when dry which will resemble old rolled glass.
