In the video, a person is seen decorating a cookie with icing. The cookie is shaped like a fish and is placed on a pink surface. The person uses a piping bag to apply white icing along the edges of the cookie, followed by orange icing to fill in the body of the fish. They then add details such as a red mouth and white eyes using a smaller piping bag. The person's hands are visible as they work on the cookie, and the video focuses solely on the decorating process.