How to Draw Mouths on Your Fashion Figures
Draw three-quarter view lips.
Sketch an oval for the head and draw a face grid with the vertical line off-center. Use a couple of dashed horizontal lines to divide the lower half of the face into thirds. Draw the woman’s eyes, nose, and lips along the horizontal lines.
The opening of the mouth sits on the lower dashed line. To draw the lips in a three-quarter view, divide the lips in left and right halves. Draw the half closest to the viewer as usual, with the upper lip as a downward arc and the lower lip as half an upward arc.
Draw the other half of the lips the same as the first half, but keep the curved top shorter and narrower. Make sure the bottom half is a small curve.