One thing to look at is the way a line from a fold can begin from the line of anatomy (arm) then continue to pull around the body and exaggerate form. This is one of the reasons I was so captivated by studying drapery, it's similar to the way hatch marks which follow form can actually make things appear more 3D then they do in reality. Drapery can have this same effect and will say a lot about the personality of the character by also exaggerating their posture.
