In the video, a person is seen decorating a cake with fondant. The cake is pink with white hearts on it. The person is using a purple piece of fondant to create a bow on top of the cake. They start by placing the fondant on the cake and then folding it in half to form a bow. They then use their fingers to shape the bow and make it look more realistic. Finally, they place the bow on top of the cake and adjust it to make it look perfect.