Correcting Head Proportions with Digital Editing Tools

Hello! In the previous lesson, you built a three-quarter head by turning the cranium, shifting the facial centerline, and keeping the brow, nose base, and chin on one connected form. Now you’ll use that sketch as a working draft. The aim is to spot a proportion error, decide what caused it, and make the smallest useful correction in ibis Paint.

Allow about 40 minutes, including time to revise your sketch. Keep the drawing at the construction stage: correcting the head now will give the eyes, nose, and mouth a sound foundation in the next module.

See the error before you edit it

After looking at a sketch for several minutes, its proportions can start to feel normal even when something is off. A horizontal canvas flip gives you a fresh view. Watch the layer-panel demonstration in My TOP 10 ibisPaint X Tips in 2025! by Hanacue to locate the flip controls.

Flip your sketch, zoom out until the entire head fits comfortably on screen, and look at its large relationships before inspecting small marks. Is the cranium too narrow for the jaw? Does the chin fall beneath the facial centerline, or has it drifted toward the middle of the original circle? Do the brow and nose guides still describe the same turn? A flip helps reveal an error; it does not tell you by itself what the correct shape should be.

Your reference provides that second check. Compare the drawing and reference in the same left–right orientation: either compare before flipping or return the canvas to its original view afterward. Start with the outer head shape and overall turn, then compare the cranium, brow level, nose base, and chin. Look for relationships rather than identical measurements. In a three-quarter view, the far side of the face is supposed to look narrower; changing it to match the near side would erase the turn, not fix a proportion.

Name one specific mismatch before touching a tool—for example, “the chin is too far toward the ear,” rather than “the head looks wrong.” That diagnosis tells you what to move and what to leave alone.

Match the correction to the error

A selection lets you adjust part of a sketch without shifting everything else. Read the mouth example in ibis Paint’s Fine Tuning Using the Lasso tool. Although the example is a finished feature, the same method works on a misplaced chin or jaw segment in your construction.

Use the Lasso for a local error, enclosing the strokes you intend to move along with a little room around them. The selection affects pixels on the active layer, so check that your sketch layer—not your reference layer—is active. If you cannot draw normally after a correction, check whether the selection still needs to be cleared.

For an error affecting the entire construction, transforming the sketch layer may be more appropriate. The ibis Paint guide Transform tool details distinguishes moving the current layer from affecting the entire canvas, and shows the touch controls for moving and resizing.

The practical choice is usually straightforward. If the whole head is slightly too small or tilted on the page, adjust the sketch layer as a whole. If the cranium is sound but the chin has drifted, select only the chin and adjoining jaw strokes. If the construction’s turn or underlying forms are fundamentally confused, redraw those forms instead of repeatedly stretching them. Transform is a correction tool, not a substitute for deciding where the head’s landmarks belong.

Correct your three-quarter head

Return to the construction from the previous lesson. Spend roughly 18–20 minutes on one deliberate correction pass rather than trying to perfect every line.

1. Protect the draft. Duplicate the sketch layer if you can, and work on the copy. Keep the reference on a separate layer or otherwise outside the strokes you plan to transform. Zoom out, flip the view, and identify your most important structural mismatch; return to the original orientation to compare it directly with the reference.

2. Check the cause. Trace the relationship with your eyes from cranium to facial centerline, brow, nose base, and chin. A chin that appears misplaced may actually be following a centerline drawn in the wrong place. Correct the earlier structural cause first; otherwise, moving the chin alone will leave the guides disagreeing.

3. Make the smallest edit that works. If the head as a whole needs repositioning, use Transform on the sketch layer and check that its target is the current layer, not the entire canvas. If only the jaw or chin needs adjustment, lasso that region on the active sketch layer, switch to Transform, and move or modestly resize it. Leave the brow and cranium untouched when they already agree with the reference. Confirm the transform with Done, then Clear the selection.

4. Reconnect the drawing. A moved piece may leave a gap, overlap an old line, or weaken a curve. Erase obsolete sketch marks and redraw the short connections between cheek, jaw, and chin. If a transform has made a line noticeably soft or distorted, use it as a guide and redraw a clean construction stroke rather than transforming it again.

Finish with one more zoomed-out check in both orientations. Compare the result with the reference at the level of the whole head, not just the edited spot. In a three-quarter head, the near and far widths should still differ, the chin should answer to the turned centerline, and the jaw should attach convincingly to the cranium. Stop when those relationships read clearly; detailed features are not needed yet.

Takeaway

Canvas flip exposes familiar-looking mistakes, while the reference helps you judge what actually needs changing. Diagnose first, then choose the scope of the edit: the whole sketch layer for a whole-head error, a lasso selection for a local error, or redrawing when the underlying construction is wrong. After transforming, clear the selection and repair any broken lines.

This completes the head-construction module. Next, you’ll place the eyes, nose, mouth, and ears on the corrected head, using its landmarks to keep the features consistent with the turn.