A) Flood cookies with thinned white. Immediately cover with blue sugars. Let dry 4 to 6 hours. Brush off excess sugars. Using same full-strength white bag with tip3 from step 6, pipe lines on top of sugar. Let dry 2 to 4 hours.
B) Flood cookies with thinned white. Let dry 4 to 6 hours, reserve bag. Use reserved bag with thinned white icing and pipe thin lines of icing, doing small sections at a time, on top of dried cookie. Immediately cover with nonpareils. Let dry 2 to 4 hours.