Composition means to place the elements within the shot in such a way that it looks aesthetic (Study of Beauty).
Leading Lines:
Balance and Harmony:

Symmetry: While it does not have to be perfect, both sides still need to look similar.

Contrast:

Texture: Not exclusive to art, as it can be seen by way of good lighting. An Extreme Close-up is the best way of capturing texture of something.

Repetition: Visual Repetition creates a sense of unity within the images, mainly because its all around us (e.g. colours, hues, proportion, size etc).

Alignment: Also known as the main vertex, is the

Gestalt: (Ges-alt; German meaning “Shape”, “Configuration” and “Pattern”) is a type of composition that incorporates the centre piece of a photograph which includes other key objects.
Movement: