In the video, a person is decorating a Christmas tree made of pretzels with green icing. The person uses a piping bag to apply the icing in a zigzag pattern, starting from the top and moving downwards. The tree is placed on a white surface, and the person's hand is visible as they decorate the tree. The green icing contrasts with the brown color of the pretzel, making the tree stand out. The video is shot from a top-down perspective, allowing viewers to see the entire process of decorating the tree.