looking at framework on how to draw people (FMP)

  i am looking at how to draw people to get a better understanding on how to get proportions because i am struggling with mouths and noses and getting them in proportion with the face even though i am drawing puppets i need to get the face in proportion,

  this picture is the head and chin of a character its a good way of getting scale and I've always found it useful to get the scaling this way.

this is the drawing without all the marks in for the chin and you can see how the person has rounded out the edges.