Shape is a closed line. Shapes can be geometric, like squares and circles; or organic, like free-form natural shapes. Shapes are flat and can express length and width.
Colour is light reflected off of objects. Colour has three main characteristics: hue (the name of the colour, such as red, green, blue, etc.), value (how light or dark it is), and intensity (how bright or dull it is).
Space is the area between and around objects. The space around an object is often called negative space; negative space has shape. Space can also refer to the feeling of depth. Real space is three dimensional; in visual art, when we create the illusion of depth, we call it space.
Texture is the surface quality that can be seen and felt. Textures can be rough or smooth, soft or hard. Textures do not always feel the way they look.
Balance is the distribution of the visual weight of objects, colors, texture, and space. If the artwork was a scale, these elements should be balanced to make an image feel stable
Contrast refers to differences in values, colors, textures, shapes, and other elements. Contrasts create visual excitement, and add interest to the work
Emphasis is the part of the design that catches the viewer’s attention. Usually the artist will make one area stand out by contrasting it with other areas.