Sculpting shapes with light
Now that I have my light source, I keep it in mind for the rest of the image. The key trick here is to render the image as if you were a computer: visualise the light source in your head in 3D, and figure out where it hits. Of course, you can cheat a bit to add some highlights here and there, even if it’s not always 100 per cent realistic. Here, I add some highlights on the structure in the background to define the structure, and also at the bottom left so that the little spikes will stand out more. Be sure to add volume to objects by keeping their shape in mind and thinking how light hits them. In addition, try limiting the main lit area to a specified area of interest.