Not including foreground interest
This is a common mistake in landscape photography and some documentary photography. That’s because photographers in these genres often use wide-angle lenses, which usually include lots of foreground detail in the composition.
The idea of foreground interest can be a hard concept to grasp at first but it makes sense when you start to think about it.
For example, I made the following photo with a 14mm lens (a wide-angle on my APS-C camera). I wanted to tell a story about the couple in the market. Using a wide-angle lens helped me include context – the piles of vegetables in the foreground that the couple was selling. The vegetables provide foreground interest and support the story.
The same idea also applies to landscapes made with wide-angle lenses. In the photo below the ruins is the main subject. The flowers in the foreground add interest in the bottom half of the frame.