Drop down one-half the distance from the eye-line and chin line for the nose line. Indicate a horizontal line about the width of an eye. The bridge of the nose is extremely narrow between the eyes and broadens out near the nostrils. A wide bridge tends to give a common expression. Strive for an aristocratic expression.
When drawing the nose in a front view think of a small circle, from which are extended the nostrils. The planes of the nose are suggested by two lines going up toward the eyes. Later everything but the nostrils may be erased.
One third of the remaining lower part of the oval is the location for the mouth. The mouth is about one and one-half the length of an eye. Pull lips are used for a youthful expression and narrow lips for a mature expression.
One may think of the mouth in terms of a Cupid's bow for the upper lip. The lower lip is then suggested. In a profile view of the mouth the upper lip extends out over the lower lip slightly. Some artists draw small pointed mouths, while others draw full lips and rather large mouths.
There are no set rules for the eye-brows, as they vary in relation to the expression.
The ears extend a little outside the oval and follow the lines of the eyebrow and nose.
Wnen the head is even with the eye level the ears will be on a level with the eye-brow line and the lower end of the ear on a level with the nose line or nostrils. This forms an axis on which the head moves up and down. When the head is above the eye level in an uplifted or tilted backward position the nose will be above the ear line. One sees less of the forehead and more of the chin. When the head is lower than the eye-level in
a downward view the nose will appear to be lower than the ear and one sees more of the forehead and less of the chin.
After the features have been placed in the face, the oval should be shaped. Indent at the eye-line. If you like hollow cheeks, curve the cheek line in a little. Make angular chin lines.
In sketching the hair use as few lines as possible. Nothing is more amateurish than to draw a lot of meaningless lines.
The best rule to follow in sketching the face is to omit as much detail as possible in order to avoid a photographic likeness. Remember you are sketching - not trying to reproduce a detailed likeness of anyone. Detail tightens; keep your sketch free and loose. Omit part of the outline of the face, you may even leave out the nostrils of the nose; be a little abstract. Such things will tend to give your work freedom.
Remember, as I have suggested elsewhere, to strive for sophisticated smartness rather than shallow beauty.