Placing the facial features was the most difficult part: not only did I have to get the proportions right at the outset but I also needed to consider the expression of the drawing.
As always I took my best guess at the vertical placement of the brow ridge and then checked its accuracy by sighting. Next was the base of the nose – take your best guess first, this trains your eye, and then measure.
The placement and arabesque of the interstice (the opening) of the mouth followed. When drawing the mouth you should always establish the interstice first. It is significantly easier to place than the vermilion borders of the lips and, more importantly, the interstice determines the expression of the mouth.
