'Focus on the Eyes': The eyes are one of the most expressive parts of the face. Understand the structure of the eyes and accurately draw the pupils, eyelids, and eyebrows.
'Proportions of the Nose and Mouth': The position and size of the nose and mouth determine the overall proportions of the face. Measure the distance between the nose and mouth accurately, and draw the mouth accordingly.
'Representing Skin Texture': The skin on the face is smooth, but it also has various textures and reflections of light. Try to express these characteristics well.
'Shadows and Light on the Face': Accurately representing the shape of the face depends on how you draw light and shadows. Observe how light reflects and shadows form on the face and draw accordingly.