Using careful framing, seeking locations that are not too crowded, and always trying to reduce the elements in the frame to only the minimum required, can help create a high contrast image that is bold, striking and is immediately interesting to your viewers.
Decluttering a scene lets the shapes created by the shadows and silhouettes take centre stage in the image.  Using careful framing, seeking locations that are not too crowded, and always trying to reduce the elements in the frame to only the minimum required, can help create a high contrast image that is bold, striking and is immediately interesting to your viewers.  Assess your frame and look for elements that can be removed whilst still leaving you with a photograph that works.