Quote - Interesting idea, but the results look way too adult to me.  At 7, the average girl's chest looks like a boy's.  She should be completely flat.  The breasts the 7-year-old has look like they belong on the 14-year-old, while the 14-year-old looks like an adult to me.

The 14 year old body, enh.  I've seen some fairly developed 14 year olds, so that's a wash.

But agreed, on the seven year old, no breasts at all.  The only time a child that young would have them would be if they are obese, and they'd be identical between boys and girls.

Heads should be larger in proportion to the bodies, especially for the youngest.  The face would be rounder.   The eyes don't grow much over time: they're almost full size when born, which means, with the smaller opening, it's almost all pupil and iris with very little white.

The jaw grows as we age faster than the skull.  This means that a young child will have a small jaw and nose but enormous forehead.  The features of the face (eyes, nose, mouth) seem to migrate up the head from childhood to adulthood, because the increase in the size of the jaw and development of the teeth increases the size of the lower part of the head, stretching it out.

The arms and legs, fingers and toes will be shorter in relation to the size of the torso and their width, making them look chubby.