In the video, a person is seen holding a piece of cardboard and folding it in half. They then proceed to cut a window out of the cardboard using a knife. After cutting, the person takes a piece of paper with a polka dot pattern and places it over the window cut-out. They then fold the cardboard again to cover the polka dot paper. The person repeats this process several times, each time cutting a new window and covering it with a different patterned paper. The final result is a cardboard box with a series of windows, each covered by a unique patterned paper.