The human head can be understood as a three-dimensional geometric form composed of planes. Conceptualizing the head as egg-shaped or cubic allows artists to rotate it in space convincingly and understand how light hits different facial surfaces. Plane awareness also makes facial anatomy less overwhelming by breaking the head into manageable structural units.
Draw the head as a simple egg or cube shape first, then subdivide into planes for cheekbones, jawline, and forehead. Study cast drawings to see how plane edges catch light.
Making planes too angular or exaggerated. Maintain planes as subtle guidance; real faces transition smoothly between them.
You already know how to give flat shapes the illusion of three-dimensional volume, and you can measure facial proportions accurately. Head construction brings these skills together by teaching you to think of the head not as a collection of features (eyes, nose, mouth) but as a solid geometric form that you can rotate in space and light from any direction. The features sit on the surface of this form — they do not float independently.
The simplest starting construction is an egg shape tilted slightly forward, combined with a flat plane for the face. Andrew Loomis popularized a method where you begin with a sphere (representing the cranium), slice off the sides to create the temporal area, then attach a wedge-shaped jaw. This gives you a three-dimensional armature that you can tip, turn, and tilt before placing a single feature. The power of this approach is that it solves the hardest problem in head drawing — getting the overall shape and angle right — before you worry about whether the nostril is the right width. If the underlying construction is wrong, no amount of detail will save the portrait.
Once you have the basic volume, you subdivide it into planes — flat facets that approximate the surface of the head the way a cut gemstone approximates a sphere. The forehead has a front plane and two side planes that turn toward the temples. The cheekbone creates a sharp plane change from the front of the face to the side. The brow ridge casts a shadow below it because it is a forward-projecting plane. The chin has a bottom plane that faces downward and catches less light. These planes are not arbitrary — they correspond to the bony structure underneath the skin. When you understand them, lighting the head becomes logical rather than mysterious: each plane faces a direction, receives more or less light based on that direction, and the transitions between planes create the structure you see in a well-rendered portrait.
The practical workflow is: construct the big form first (sphere plus jaw), then indicate the major plane changes (forehead to side plane, cheekbone, brow ridge, chin), then place features within that structure. The features themselves follow the curvature of the form — the eyes sit in sockets that are recesses in the skull, the nose projects forward from the face plane, and the mouth wraps around the cylinder of the teeth and jaw. By building from large form to planes to features, you ensure that everything sits correctly in three-dimensional space. This approach also makes drawing the head from imagination possible, because you are constructing a form you understand rather than copying shapes you see.
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