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Sketches may be a way of getting ideas down onto paper quickly, or they may be quite complex and highly-finished. You need to know a number of techniques for drawing and enhancing sketches. To draw well you need to know how to draw certain geometrical shapes (eg quadrilaterals, circles and ellipses) and solids (eg cubes, prisms and cones) which are commonly used in graphic design.
Finally you need to be able to be familiar with graphical ways of representing data, such as symbols, graphs and charts.
Sketching
Sketching is a way of putting ideas down on paper quickly. It is done freehand, but a piece of grid paper may be useful. Sketches may be two-dimensional (2D) or three-dimensional (3D).
For sketching complex shapes, a box or series of boxes can be used as a guide. This is called a crating or wire-frame drawing.
When sketching, use any medium with which you feel comfortable. Pencils and fine-line markers are particularly good. Limited colour may be used on quick sketches.
Use a level of detail sufficient to show the main points of an idea. Do not show unnecessary detail. Sketches should be sufficiently clear to allow other people to understand your ideas.
Sketch models can be quickly-made 3D models to show spaces or moving parts. They are made from suitable materials and will usually supplement paper-based sketches.
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