Anything goes when I am shooting. As an example, I took the above photo of farm eggs a few days ago. My son had put the above eggs in Kerr canning jars as they took up little space on the fridge shelf. When I saw them sitting in the fridge I brought them out to a window ledge where they reflected the sunlight. To me they looked rather funky in the jars. I snapped their photos about 20 times before I got the one and only that I liked.
I have found that photography is about your eye and your feelings as well as the mechanics of using your camera. I don't pretend that I will ever be a famous photographer Why would I do that -- when I am having so much fun just playing with my cameras.