The video shows a close-up of a person decorating a cookie with icing. The person uses a piping bag to apply purple icing to the cookie, which is shaped like a mushroom. They start by outlining the edge of the mushroom cap with purple icing, then fill in the cap with more icing. Next, they use a toothpick to drag the icing from the center of the cap to the edge, creating a marbled effect. The person repeats this process for the mushroom stem, which is also outlined with purple icing. Throughout the video, the person's hands are visible, but their face is not shown. The background is a plain surface, and there are no other objects or people in the frame.