Welcome to the description!
I color coded the 3 main parts for easy use. You don't have to follow all these 100%, its just how I used it for my own skin
Green: The green segments are the parts where skin can be found (with hair on the head ofc)
Red: The red segment is the first shirt color.
Blue: Blue is the second shirt color.

Note! You can change any other non-coded part to be what color you want, but I suggest leaving the outer layer how it is!
Enjoy!

[​anyone can use this]