Use a kneaded eraser to "pull" light back out of dark areas for a glow.
The corners of the mouth generally line up with the centers of the pupils. Focus on Value, Not Lines Secrets to Drawing Realistic Faces
Real skin isn't perfectly smooth; it has pores, wrinkles, and imperfections. Use a kneaded eraser to "pull" light back
The bottom of the nose usually aligns with the bottom of the earlobes. it has pores
Eyes are located exactly halfway between the top of the head and the chin.
The top lip is usually darker because it tilts away from overhead light.