Get the app Custom Skin Creator. In the App Store it should look like this!
Choose a skin
Choose a pair of eyes
Choose a mouth
Choose a hair
Choose glasses if you want any
Choose a hat if you want one
Choose a jacket
Hit the save button. The first time you use it you will need to allow to save to camera roll.
In Minecraft, hit the profile button. To make your skin in Minecraft is to confusing and limited.
Hit the edit character button. Then hit the button on the right.
Hit the owned button. Then hit import. Hit change skin. This will bring you to camera roll.
Select your character that you made earlier.