Number 1 — The Spine Stroke

The spine stroke is the first line drawn through the entire figure. It is not always straight — it responds to the pose with a natural S-curve. It is always the vertical axis around which everything else is organized.

KEY CONCEPTS

The spine stroke is the vertical axis — always drawn first before any other form
Runs from crown of head to the tailbone
A natural relaxed spine has a gentle S-curve — not ruler-straight
In action poses, the spine becomes a pronounced S, C, or diagonal
Figure height = 1 unit; midpoint = belt; quarter points = armpit and knee
The spine stroke IS the gesture line of the torso

Before drawing any form, draw the spine stroke. This single line commits you to: the pose direction, the height of the figure, and the relationship between the chest and pelvis. Everything else is built around this line. The spine stroke is your most important drawing act — respect it, and it will guide everything else.

In action poses, the spine stroke becomes more pronounced. A superhero leaning forward aggressively might have a dramatically forward-curved spine. A figure recoiling in surprise curves backward sharply. A sprinter leans their whole spine at 45 degrees toward the direction of motion. The spine stroke IS the pose.

TRY THIS — 10 MINUTESDraw ten spine strokes rapidly on the page — each 6–8 inches long. Make them: straight, gently curved, S-shaped, diagonally leaning, dramatically arched backward, dramatically curved forward, tilted left, tilted right, extreme S-curve, extreme C-curve. Each spine stroke implies a completely different pose. Now try to imagine what figure surrounds each one.