How to use the script for creating custom skins

I would like to create skins for PPD but I don't know how to use the scripts and which images I'd need as a base for creating the scripts. I've been searching for tutorials but I can't find anything, where could I find something for learning how to do it?

There is no skin system officially.
There are base files link in this mod page.
script/7b965cb056746879b0cf84ad7295923c