Wilton-I Taught Myself: Cookies. Learn how to decorate cookies with royal icing using this easy DIY set. Whether you are a first-timer or you have tried this before, I Taught Myself makes learning easier and decorating more fun! Complete all six unique decorating projects inspired by the latest fondant cake trends. This 12-1/2x6- 1/2x1-1/2 inch package contains twelve disposable decorating bags, two #2 piping tips, one etching tool, one comb tool with 3 pin head, one silicone scraper, one decorating brush, one round scallop cookie cutter, one square scallop cookie cutter and one I Taught Myself book. Imported.