Hi pippin I have painted with glass paints a lot A & B glass paints are great I have just bought the solvent based paints they pong a bit with fumes but the consistency is quite thick so dont go all over the place. and if you use the black contour paste, let it dry and glass paint in the spaces that is very easy. I use the paints on the back of acetate foils from A & B and you get a great effect. Linda