The first step to creating an expressive photograph happens before you even click the shutter: it is the act of visualizing an image in your mind's eye. Once composed and captured, the data recorded by the camera is then transformed in processing to match the visualized image.
To become a better expressive photographer means, among other things, to become a better visualizer. This requires more than just technical skill, but also an understanding of what art is, what it means to be an artist, and how to translate your thoughts, feelings, and experiences into visual creations.
In The Landscape Photographer's Guide to Photoshop: A Visualization-Driven Workflow, Guy Tal provides a broad theoretical foundation for digital landscape photography as an expressive visual art, and for understanding how art and technology come together to serve your creative purpose. He then offers a roadmap for a visualization-driven approach to processing images in Photoshop.