A work of art can be analyzed by considering a variety of aspects of it individually. These aspects are often called the elements of art. A commonly used list of the main elements include form, shape, line, color, value, space and texture.
The form of a work is its shape, including its volume or perceived volume. A three-dimensional artwork has depth as well as width and height. Three-dimensional form is the basis of sculpture. However, two-dimensional artwork can achieve the illusion of form with the use of perspective and/or shading or modelling techniques.Formalism is the analysis of works by their form or shapes in art history or archeology.
Lines and curves are marks that span a distance between two points (or the path of a moving point). As an element of visual art, line is the use of various marks, outlines, and implied lines during artwork and design. A line has a width, direction, and length. A line's width is most times called its "thickness". Lines are sometimes called "strokes", especially when referring to lines in digital artwork.
Color is the element of art that is produced when light, striking an object, is reflected back to the eye. There are three properties to color. The first is hue, which simply means the name we give to a color (red, yellow, blue, green, etc.). The second property is intensity, which refers to the vividness of the color. A color's intensity is sometimes referred to as its "colorfulness", its "saturation", its "purity" or its "strength".The third and final property of color is its value, meaning how light or dark it is. The terms shade and tint refer to value changes in colors. In painting, shades are created by adding black to a color, while tints are created by adding white to a color.
Space is any conducive area that an artist provides for a particular purpose. Space includes the background, foreground and middle ground, and refers to the distances or area(s) around, between, and within things. There are two kinds of space: negative space and positive space. Negative space is the area in between, around, through or within an object. Positive spaces are the areas that are occupied by an object and/or form.
Texture, another element of art, is used to describe how something feels or looks. There are many forms of texture; the two main forms are actual and visual.
Visual texture is strictly two-dimensional and is perceived by the eye that makes it seem like the texture.
Actual texture (tactile texture) is one not only visible, but can be felt. It rises above the surface transitioning it from two-dimensional to three-dimensional.
Some Examples: Furry, Bumpy, Smooth, Rough, Soft, Hard... etc...
Value is the degree of lightness and darkness in a color. The difference in values is called contrast. Value can relate to shades, where a color gets darker by adding black to it, or tints, where a color gets lighter by adding white to it. White is considered the lightest value whereas black is the darkest. The middle value between these extremes is also known as a half-tone, all of which can be found on a value scale. 
Shape refers to a 2-dimensional, enclosed area. Shapes could be geometric, such as squares, circles, triangles etc. or organic and curvaceous.