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TEXTURE
Texture is the surface quality of a shape – rough, smooth, soft hard glossy etc. Texture can be physical (tactile) or visual.
Size is simply the relationship of the area occupied by one shape to that of another.
SHAPE
A shape is a self contained defined area of geometric or organic form. A positive shape in a painting automatically creates a negative shape.
LINE
Line can be considered in two ways. The linear marks made with a pen or brush or the edge created when two shapes meet.
DIRECTION
All lines have direction – Horizontal, Vertical or Oblique. Horizontal suggests calmness, stability and tranquillity. Vertical gives a feeling of balance, formality and alertness. Oblique suggests movement and action