This tutorial is set by the author to use the CC By-NC-SA protocol.

How to set up local skin/cloak

Client -Find Saves/World Name/SKIN_CACHANGER/CACHE.JSON

Server -World Name (such as the default World)/SKIN_CHANGER/CACHE.JSON

There are player names and skin/cloak UUID

Drag the skin/cloak picture file to the UUID (without file suffix) into Skin_CHANGER/SKINS or SKIN_CHANGER/CAPES