DEMON'S SHITTY TUTORIAL:
-If you want to make a good set I'd say you either base it off of something or start from scratch,
-Using templates is the most obvious way to go about it
-Using an app or thing that can use onion skin(so you can see the template)
-Use colors that are on the color list E.G. Shaman, Vampire.
-Keep it simple, No one wants to see a rainbow,
-Have a force to go with it,
-Be [Origin]-al(see what I did there) if you are basing it of something, Change it in a way,
-Make a texture for each body part, Don't upload the same image to every part.
That's all I can think for now,