Shape- can be natural or man made, regular or irregular,flat (2--Dimensional) or solid (3--dimensional), representational,
or abstract, geometric or organic, transparent or opaque, positive or negative, decorative or symbolic, colored, patterned or textured.
Line- is the foundation of all drawing. It is the first and most versatile of visual elements of art.
Tone is the lightness or darkness of a color. The tonal values of an artwork can be adjusted to alter its expressive character.
