SKIN SETTING INSTRUCTIONS IN THIS TEXTURE PACK
 1.Download the texture pack for the version you need
 2. Open the zip folder and go to the mob folder
 3. Replace char.png file with your own (beware, your skin must be named exactly char.png and must be 64 x 32!!)You will notice that if you display the large icons, you will see a gray texture with the text "change me"
4.Paste the texture pack into the folder...\Roaming\.minecraft\texturepacks(not the resource pack) 
5. Enjoy your skin in the old version of minecraft