How to get skins in minecraft PE version

Double click on trackpad and press Get Info, go to Name & Extension, then change the skin you want to char.png, then go to Finder, Your Home(like ex: jpledger), Library, Application Support, minecraft, texturepacks, go in to your texture pack, press mobs file, then drag the skin called char.png in to the file, there is your skin! Woppss, almost forgot to tell you, you have to keep Minecraft closed the whole time you are doing this!