You can see how the knee, upper thigh, elbow and shoulder sections employ a displacement by simply using a texture that is really nothing more than a series of thin horizontal lines. Obviously, this kind of UV layout would not be good intricate patterns position along the edges of the torso and limbs as they would get stretched. But for this kind of thing, it makes texturing far easier.

Sincerely,

Bill

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Tempt the Hand of Fate and it'll give you the "finger"!