How To Draw A Likeness. Do not draw the lips with an outline, draw the shadow shape that makes up the upper lip and the shadow shape under the lower lip. For example, in practice, in russia in the winter artists can draw a live portrait in the 30 degree cold, the most important thing people are willing to pose.
Achieving a likeness means that your drawing of a person is recognisable as. When drawing the jaw bone aka the mandible, with three simple angles, this will go a long way in creating a likeness as well. This means it needs to.