The use of dominance within an image often depicts what the eye fixates on first. It establishes space and perspective within in an image while also determining the visual weight within the composition.
There are three different types of dominance which give varying amounts of emphasis to different parts of an image. The dominant stage refers to the object that has been give the most visual weight within the composition which is brought to the foreground and given primary emphasis. Subsequent to this is the sub-dominant object which is the secondary emphasis point within an image in the middle ground. The object given the least visual weight in a composition is referred to as the subordinate focus which diminishes into the background.
For my image, the subject will be the dominating aspect while the computer and the contents of the screen will act as the sub-dominant feature. The background environment that I will place the subject into will be the subordinate focus that holds the least weight in the image.