When people talk about the technical side of photography, it is easy to get lost in all the math and science while forgetting some of the more basic parts. One of these is the effective usage of angles.
Take the two photos below. The first does show a nice flowering plant, the details are all there but so is something a little less pleasant. Check out the dirty black trash bag in the corner. the seconds is of the same plant at a slightly different angle with similar coloration and clarity but no ugly distraction. The third and fourth photos show something similar too.
So the point is, when you’re working on your exposure meter setting, adjusting aperture and shutter speed, selecting the appropriate ISO… don’t forget to use a nice and effective choice of angles.