Gallery Glass Free-Form GLASS ART - 9379 Author:Gallery Glass Use Gallery Glass Window Color to add luster and interest to ordinary bottles, jars, vases, plates, mirrors, and panels. In this book, you'll find instructions for 31 decorative projects with the look of art glass, plus how-to photos and color-coded full size patterns. — The basic technique featured in this book is called "casting." For this tech... more »nique, simply squeeze Window Color paint on a flat surface and spread with a palette knife to make sheets of "glass." Allow to dry; then cut, and apply to glass or acrylic surfaces. Colors can be combined for the look of marble or antique glass and cast onto textured surfaces to create the look of textured glass. You also can paint or embellish designs by applying paint directly from the Window Colors bottle tip.