Adhere to the Rule of Thirds. By placing the most interesting elements of the shot to the left or right of center or above or below the horizontal midline, you’ll have a more balanced shot. In the image above, note how the vertical line of trees is to the left side of the frame, while the horizontal line of trees is just below the midline. What’s more, the crest of the most prominent hill is shifted to the left for a more interesting composition.
Take two shots of the exact same scene, one that’s exposed for the sky and another that’s exposed for the foreground (a process called bracketing). In post-processing, blend the exposures for a final image that’s well-exposed throughout.