How to fix proportion errors in a grid drawing

When a grid drawing feels wrong, resist the urge to repair the eye, nose, or texture immediately. Compare the outside rectangle, centre axis, and largest silhouette crossings. Find the first place where the drawing no longer matches the reference. A line that enters one cell a quarter-width too early can push every later feature out of place.

Use negative spaces as evidence. The triangle between a neck and shoulder, the margin above an ear, or the gap beneath a jaw has no familiar symbolic shortcut, which makes it easier to judge honestly. Correct the broad shape, then reconnect contours through adjacent cells. Check at arm’s length before returning to details.

Heavy construction lines make correction harder. Use light graphite or non-photo blue on the destination surface, and keep a ruler-checked print reference as the measurement authority. The grid is a temporary tool; it should never become the reason a drawing cannot be revised.