The video shows a close-up of a person's hand holding a piping bag filled with yellow icing. The person is squeezing the bag, causing the icing to come out in a steady stream and create a design on a white cake. The icing is bright yellow and contrasts sharply with the white cake. The person's hand is steady, and the icing is applied carefully to create a specific pattern. The video focuses on the action of squeezing the icing bag and the resulting design on the cake.