How To Decorate Hello Baby Script Mix and bag flood white and dark pink icing plus medium light pink icing. Outline the banner with edible ink marker. Flood banner in pink and script section in white. Allow the cookie to dry for 8 hours. Apply medium light pink icing over stencil. Scrape the icing with a runner spatula. With the medium pink icing, pipe over the “hello” and add addition text on the banner of you wish. Congratulations! You’re all done!