... shows the position of the film.Fix steps:1, Put one foot on the film, and stamp down to make sure ... , Pull the film out, until the foot passed the knife for about 5cm-10cm.3, Stamp down to the floor quickly ... film will be cut by the knife. At the same time, the little plastic part will be down to the original ... the traditional shoe cover. automatic shoes cover machine with film,one time use,home use