Width of the face is 5 eye-widths across (sometimes slightly more or less).

Eyes are 1 eye-width apart.

Distance from lower lip to chin is equal to 1 eye-width.

The ears are the same length as the top of the thumb to the top of the index finger.

The outer corner of the eye can be higher than the inner corner, but not the reverse.

A face with thinner and neater eyebrows, fuller lips, a smaller skull and more narrow neck will read as more feminine.

Masculine faces typically have wider mouths, but thinner lips.

Feminine neck has a more pronounced forward movement compared to the masculine neck (which appears more vertical).

Palms and soles are half the width of the face.

There is no difference between masculine and feminine faces before adolescence.

Babies to children up to 4 years old have no eyebrow ridge or visible cheekbones.

Children (from 5 to 11 years old) begin to have a visible nose bridge, but the tip of the nose is upturned.

Children's faces occupies a smaller area of the head than in an adult.

Adolescents (12 to 17 years old) have large, child-like eyes but also have full, lowered eyebrows like an adult.

The adolescent's nose is larger than a child's but may still be upturned.

Young adults (18 to 30 years old) is often drawn as the “default” face, in that there are no age-related deformations.

Late adulthood (40 to 59 years old) faces begin to develop crow's feet and other age-related lines

Late adulthood males begin to be associated with receding hairlines.

Older (60+ years) develop worry and frown lines, and smile lines become permanent.

Older adults have lighter coloured irises and lips.