Leading:

Leading lines refers to a composition technique whereby the viewer's eye is attracted to lines that lead directly to the principle subject in the image.

Vertical: 

As horizontal lines can be accentuated by shooting in horizontal format vertical lines can be used very effectively by swapping the way you hold your camera into a vertical framing.

  

   

·  

Horizontal:

Horizons are the most common horizontal line to be found in photographs and they often act as a dividing point in a photograph

     

 Diagonal lines:

 are extremely effective at doing this. When you intersect a diagonal line, or point it in the direction of a particular object, the tension created draws the eye towards this point.

     Curved

  Curved lines may add beauty and grace to an image. They are also used as a popular design technique for leading the eye into the frame.

     Symmetrical

   refers to a line that splits an object in half and, if both sides of the object are an exact mirror image of each other, then this object is said to be symmetrical.

    Asymmetrical

  A photographer will use asymmetry (lack of symmetry), or unevenness, to create visual interest, tension and movement

Variety: 

combining the art elements to stress the differences between those elements and to create one or more centers of interest in a work of art. 

Movement / Rhythm: 

a movement in which some elements recurs regularly.  is the path the viewer's eye takes through the artwork, often to a focal area.

Emphasis: 

as an area or object within the artwork that draws attention and becomes a focal point.

Proportion / Scale: 

refers to the relative size and scale of the various elements in a design. The issue is the relationship between objects, or parts, of a whole. 

Repetition / Pattern: 

is a combination of elements or shapes repeated in a recurring and regular arrangement

     bird’s eye: 

is an elevated view of an object from above, with a perspective as though the observer were a bird, often used in the making of blueprints, floor plans, and maps

rule of thirds:

Take 2 vertical lines, and 2 horizontal lines and divide your photo up into 9 equal squares

framing:

Framing refers to using elements of a scene to create a frame within your frame. For example, you might shoot through a doorway, pulled back curtains, branches, fences, tunnels, or arches to highlight your subject.

simplicity:

A more technical method of achieving simplicity involves focusing on the subject while ensuring the background is out of focus.