In this image I have drawn the basic proportions in a schematic face. Almost no one has such a perfect schematic and symmetrical face but it is useful to have a starting point. In the next exercise you can learn it step by step.
Exercise 1: draw each of the following steps
Step 1: draw an egg head about 10 centimeters high with the two guiding lines through the middle very lightly. On the half of the head, draw simplified eyes with the eyebrows above them. About the width of one eye fits between the eyes. Learn more about eyes in the lesson Eyes, noses, mouths and ears, level 2
Step 1
Step 2: about halfway between the eyebrows and the chin is the bottom of the (simplified) nose. About between the height of the eyebrows and the nose draw the ears. You can’t see much of the ears from the front. Learn more about noses and ears in the lesson Eyes, noses, mouths and ears, level 2
Step 2
Step 3: About halfway between the bottom of the nose and the chin you draw the lowest part of the mouth, indicated by a line under the lower lip. Right above that you draw the line between the lips of the closed mouth. Learn more about mouths in the lesson Eyes, noses, mouths and ears, level 2
Step 4: now you can draw just the outline of the hair, long or short, but always slightly wider than the bald head. You can finish and color the face any way you want. Irises partly hidden under an upper eyelid make the gaze look a bit softer.
The last example is someone with glasses. The round glasses show nicely where the eye sockets are, sheltered by the eyebrows.