Cut the paper backing closely around the masks, then pick a spot and cut just enough of the backing to allow a small area of the mask to stick. Position the mask where you want it, trying not to let the exposed area stick until you have it really close. When you get it where you want it, press the exposed area to the body. Double check the position by letting go, then run your finger from the taped end to the opposite end of the mask and see if it lines up where you want it. If so, then lift the mask and start to peel the backing just enough to let it roll under the mask. Repeat the process of running your finger down the mask, sticking it down as you go, letting the backing peel as you work your way down the mask.