I havent done a size chart. It's not come easy to me to do and I think the real thing that makes the difference in terms of a character's apparent size and shape are based on way too many factors to put into a chart and get out in a time that works with my adhd.

Also: when you use the border of the image to cut off parts of the body, that saves on the decision-making required to decide how tall or wide the hips are, or what orientation the arms need to be in.