These are the principles and elements from the artistic canon.
THIS PAGE covers most of them, but the individual links might add to your understanding or make more sense to you.
2-D Design Issues may include, but are not limited to, the following:
Unity – All the elements of an image are working together to make it work (Does the “cold” color tone fit with the person’s “cold” expression?, etc). Unity is kinda like the opposite of juxtaposition.
Balance – Does the piece have the same “visual weight” on the left side as the right?
Harmony – Kindof a vague principle – It’s about images that seem to “fit,” like pieces of a puzzle
Variety
Emphasis – We’ve discussed MANY ways to use emphasis in photography. Framing Device emphasizes the focal point, for example.
Rhythm
Contrast
Proportion
Repetition
Scale
Figure/Ground Relationship
Movement