For making leaded-light effects in combination with
spirit based glass paints, you first trace the contours with Relief Paint and then fill in the demarcated areas with glass paint.
For the most fantastic relief effects on, for example, sturdy cardboard, wood, paper, perspex, glass and objects both glazed and unglazed and tiles
(not in damp areas).
Relief Paint gives a lively feeling of depth. (for use with spirit based glass paint)