daz poser uses the Greek rules of characters. Marvel and DC does also.

a adult head is 5 eyes wide 7 eyes tall

a adult body is 8 heads tall.

the shorter you make the face the younger the face will look.

the more you shorten the body the younger the body will look.

younger they are the shorter the legs also.

google is full of ratios n charts using all kinds of measurements

every thing from the Greeks,golden main to a ruler.

 

fat cheeks n a small nose will make them look younger also. 

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