One way to convey light and shadow in photography is to focus on contrast and composition. You can use natural light sources such as the sun or artificial lighting to create dramatic shadows and highlights in your images. Pay attention to how the light hits your subject and experiment with different angles and positions to create interesting patterns and shapes.

You can also use techniques such as backlighting, where the light source is positioned behind the subject, to create striking silhouettes and highlight the shapes and forms of your image. Alternatively, you can use side lighting to create more depth and texture by casting shadows to one side of the subject.

Another way to capture light and shadow in your photos is to play with your exposure settings and post-processing techniques. Adjusting exposure and contrast levels in your camera settings or editing software can help you enhance the shadows and highlights in your images, creating a more dynamic and visually appealing composition.

Overall, the key to portraying light and shadow in photography is to be mindful of how light interacts with your subject and environment, and experiment with different techniques and settings to create the desired effect in your images.