(just for heads , becouse i think your not ready to make sets
)
The best tuts:
Form Magix
From Preater
Tip:
Make your head 128x128 ,256x256 or 512x 512
Here an template wich would help you
To wear in game you need to have the texture item avilible in the shop for 2k tc
Head
Also here al body texture parts : Textures
They're not cheap
Front : Like the plce where is the face
back: There were should be placed hairs
right: if you were your tori that will be your right part
Left: if you were your tori that will be your right left
Hope it helps