Two-Dimensional Media, Techniques and Processes
Knowing your materials
Two-dimensional work includes drawing media (graphite, charcoal, conte, ink), painting media (watercolour, gouache, acrylic, oil), printmaking and mixed media. Marks are earned for choosing a medium that suits your intention and for controlling it with skill, not for using many media superficially.
Concepts a candidate must understand
- Opacity and transparency: watercolour is transparent and works light-to-dark, reserving white paper; gouache and acrylic are opaque and can be worked dark-to-light.
- Drying behaviour: acrylic dries fast and cannot be re-wetted; oil stays workable for hours; watercolour can be lifted while damp.
- Support and preparation: paper weight and surface (rough, cold-pressed, hot-pressed) change the mark; priming affects absorbency.
- Mark-making vocabulary: hatching, cross-hatching, stippling, scumbling, dry brush, wet-in-wet, impasto, wash, resist.
- Layering and glazing: thin transparent layers over dry layers build depth; thick layers build texture.
- Health and safety: ventilation for solvents and fixative, care with sharp tools and presses.
Traps in questions
- Describing a medium's effect without naming the technique that produced it.
- Assuming all paints mix and layer the same way; mixing acrylic over oil or applying watercolour thickly as if opaque.
- Overworking watercolour until the paper loses its luminosity.
- Confusing a process (how it was made) with a technique (a specific controlled method).
- Ignoring the role of the ground or support in the final result.
Worked example: choosing a medium
If the aim is soft atmospheric distance, transparent watercolour glazes or charcoal blending suit it. If the aim is bold flat graphic shapes, opaque gouache or acrylic with masking suits it. State the aim, name the medium and technique, then explain the visual consequence.
Rule of thumb
Work from thin to thick and from light to dark, allowing drying time between layers.