One of the more nuanced and difficult aspects of landscape photography is composition. This excellent video features a professional landscape photographer as he talks through how he chose the compositions for two of his images.
Coming to you from Ben Horne, this great video follows him as he discusses the process of composition for two of the photos in his portfolio. Composition can be a tricky subject to tackle simply, because unlike things like choosing shutter speed or ISO, there are not quantifiable parameters when it comes to it, and any rule is more a guideline than any sort of hard and fast law that must be followed. Of course, that does not mean there are not general methods and aesthetics that can help you become better, and one of the best ways to improve is to see how an accomplished photographer thinks through the process. Composition should serve to tell a story in an elegant and concise way and encourage the viewer's eye to linger on the image and explore it, rather than reading it in a one-dimensional manner. Check out the video above for Horne's full thoughts.
And if you really want to dive into landscape photography, check out "Photographing The World 1: Landscape Photography and Post-Processing with Elia Locardi."