Contrast, Balance, Emphasis, Movement, White Space, Proportion, Hierarchy, Repetition, Rhythm, Pattern, Unity, and Variety.
I could use these principles to make my art work more aesthetically pleasing and more optimistic to the viewers experience. Hope this helped :))
1. A
2. B
3. C
4. C
5. A and B
(4 and 5 I am pretty sure of, judging from the images, but make sure that you think that yourself as well...)