I made this cake for a birthday party for a 7 year old. It is 1/4 sheetcake cut in half. I iced it with white buttercream and starred the red stripes. The popocorn lable is also buttercream. For the popcorn I used marshmallows. For the yellow popcorn, I brushed the marshmallows with golden yellow coloring (I put just a small amount in water),