The video shows a close-up of a person's hands as they use a piping bag to decorate a cupcake. The person starts by squeezing the piping bag, which is filled with white frosting, onto the top of the cupcake. They then proceed to swirl the frosting around the top of the cupcake in a circular motion, creating a decorative pattern. The cupcake is placed in a green cup with white polka dots. The person's hands are steady, and they appear to be experienced in using the piping bag. The frosting is smooth and creamy, and the swirling pattern is even and consistent. The video ends with the fully decorated cupcake, which looks delicious and ready to be served.