A line is a straight one-dimensional figure having no thickness and extending infinitely in both directions.
Mass
A mass is a solid body or a grouping of visual elements (line, color, texture, etc.) that compose a solid form. Volume is a three-dimensional form comprising length, width, and depth.
Shape
A shape is an enclosed object. Shapes can be created by line, or by color and value changes which define their edges. A shape is considered to be a two-dimensional element, while three-dimensional elements have volume or mass.
Texture
.Texture is an element of design that defines the surfaces of shapes and forms. Texture that you feel with your fingers is called tactile while texture that the artist recreates on a flat surface is called visual texture.
Colour
Colour is the element of art that is produced when light, striking an object, is reflected to the eye. There are three properties to colour.
Value
Value is a design element that refers to the relationship between light and dark on a surface or object. Value is also referred to as tone when talking about black and white images.
Balance
The principles of design describe the ways that artists use the elements of art in a work of art. Balance is the distribution of the visual weight of objects, colors, texture, and space.
Unity/proximity
Design theory describes unity as the way in which the different elements of a composition interact with one another. A unified layout is one that works as a whole rather than being identified as separate pieces.
alignment
Alignment is the placement of elements so they line up in a composition. In design, we use alignment to organize elements, to group elements, to create balance, to create structure, to create connections between elements, to create a sharp and clear outcome.
REPETITION
Repetition is reusing the same or similar elements throughout your design.