The proportions of the human head is a 8 to 5 ratio. An eye is usually shaped like an almond too. The positions of the eyes and nose are in the middle of the face and the lips are directly under the nose about a half inch to an inch. Ears start at the top of the eyes and fall between the nose and mouth. You make an eye glassy by adding an extra circle around the eye to make it look brighter. In conclusion drawing the human head is very difficult.