When designing the character of Heck Hammarskjöld, I made him look distinctive by putting indelible shapes into his face:
1. Straight brow, broken up by furrows,
2. Simple top-line-and-circle eyes,
3. Y-shaped cheek wrinkles,
4. Broken bridge of nose with three-bump nose bottom,
5. Up-arrow-shaped chin dimple, and of course,
6. a prominent philtrum.