Drawing and Sketching Techniques
What the domain tests
Drawing and Sketching Techniques covers observational drawing, media handling, proportion, perspective and value structure. Practical papers ask for a still-life or object drawing; theory papers ask you to explain methods (sighting, negative space, one- and two-point perspective) and to diagnose faults in a described drawing.
Core rules
- Graphite grades run 9H (hardest, lightest) to 9B (softest, darkest); HB or 2B is the standard sketching grade. Charcoal gives deep darks, conte and ink give crisp line.
- Tone sequence: highlight → half-tone → core shadow → reflected light → cast shadow. Keep one light source consistent across the sheet.
- Perspective: the horizon line is eye level. One-point for a front-facing box, two-point for a corner view, three-point for looking up or down. Parallel receding edges converge at a vanishing point on the horizon.
- Measuring: extend the arm, sight along the pencil, mark a unit with the thumb, and compare every other length to it. A plumb line checks verticals.
- Ellipses: the minor axis aligns with the object's axis, and the opening looks wider the closer it sits to eye level.
Worked example
A cube seen corner-on: draw the horizon first, place two vanishing points far apart on it, drop the nearest vertical edge, then run construction lines to both points and cut the top and bottom planes. The nearer vertical is longest; edges above eye level slope down to the vanishing points and edges below slope up. Checking angles against the points explains why a drawing looks 'tipped' when a point is misplaced.
Traps
Vanishing points placed off the horizon; parallel edges drawn parallel in a perspective view; pure outline with no value structure; uniform shading with no core shadow; wrongly tilted ellipses; darkening too early, which makes correction impossible.