Two things I keep focused on are the importance of composition and light in photography. Finding and using the correct light is crucial in taking great photos.
Below are two lighting extremes in the same location. The first was taken during the morning golden hour when natural light is very soft. You can see the diffused light reflected off the water, which gives the whole scene a soft, warm glow. The second was taken at midday, when the sun is brightest. On this clear day the light was very hard, which gave me sharp lines and harsh shadows.