Line only, apply the specific facial features needed to represent a man and a woman. What is unique to this project is, by apply the rules of opposites in varying degrees you can develop different character types. Through repetition, control and mastery will catch up. In no time you will be drawing an entire cast of characters, but for now focus on men and women. In a way you are creating a your concept of a man and woman. You're Adam and you're Eve. The manikin head is always at the foundation of either a male or female head.