See The Shadows, Patterns, Textures,
& Lines
One of the most important things you can do in your quest for great black and white images is to train your eye to look for shadows, patterns, textures, and lines. As a photographer, you should be looking for these things anyway, but it’s especially important in black and white photography.
For example, with shadows, look for solid blacks as subjects, set against a light background.
It could be a person, a tree, or a building casting an image on the ground or elsewhere.