In the video, a person is seen decorating cookies with icing. The cookies are shaped like Christmas trees and are placed on a tray. The person uses a piping bag to apply blue icing to the cookies, creating a star-like pattern on top. The icing is applied carefully and with precision, ensuring that each cookie is decorated evenly. The cookies are golden brown in color, and the blue icing stands out against the warm tones of the cookies. The person's movements are steady and controlled, indicating that they are experienced in cookie decoration. The video captures the process of decorating the cookies from start to finish, showcasing the transformation of plain cookies into festive treats.