Lace Window Treatment: Mix cornstarch with an equal amount of cold water, then mix that with about 1 cup boiling water. Paint thick layer on window pane, cover with lace, then put another thick layer on with random brush strokes. Diy Originales, Creation Deco, Ideias Diy, Old Windows, Vintage Windows, Antique Windows, Rustic Windows, Vintage Screen Doors, Windows Decor