By placing the oval in different positions to the circle, you can tilt the head in various directions. The ball of the head stays fixed, but the oval can move around it to allow tilted views. Play with positioning the oval and practice drawing additional views of the head.
Note the way the horizontal lines curve slightly upward with the eyes just above the midline.
Note the way the horizontal lines curve slightly downward with the eyes just below the midline.
Note the direction the eyes are looking.
Note that the pupil of the eye is not centered on the eyeball, but more of the white is showing.