Decorate cookies. Attach icing decorations on cookies with dots of piping gel. Melt white candy melts according to package directions. Fill a disposable decorating bag with melted candy, cut approximately 1/4 in. off tip if bag. Pipe approximately 20 lines of candy, 2 in. long, on parchment paper-covered cake board. Refrigerate to set, about 10 minutes. Use candy sticks to write messages and make designs on cookies.