Help

I've tried a couple of times to put on these tapes they use when you have muscle pain. The first time it felt really bad, the second time I was able to go out to a party but it tore the skin off my back. I've tried a bunch of times and I don't really understand how I can do it without leaving a lump in my armpit or breaking the skin on my back and without it lasting and obviously leaving me flat as a man. Help!!