[ISL]

It may help to know that it isn't easy to do.

Two things that might help your images say what you'd like them to say:

1) For depth, try making images that have a "foreground, middle-ground, and background". The 24-28mm-equivalent lenses on smartphones are a perfect training ground for this kind of composition, as it is easier to select foreground elements.

2) Dodging and burning: The human eye is drawn to bright parts of an image. Gently darkening things that are less-important and gently highlighting things (and paths) that are more important can have a huge impact on the perception of an image. The Snapseed app, again on a smartphone, offers a very-intuitive interface (look for the "brush" tool) for learning to dodge and burn.