Issue 8 of Street photography
How camera and motifs interact
Camera angle perspective is about how you hold your camera in relation to what you shoot. With a low perspective (worm's eye-perspective) your camera is close to the ground, at a high one you take your picture from high up (bird-eye perspective).
This matters as interesting things happen when you shift camera positions. Try it, you'll find that looking from different angels gives different relations to what you shoot.
Perspective in depth is another method in leading the onlooker's eye. Something in the foreground, that's different from focal point and/or backdrop, will add dimension and depth to your picture.
Challenge: Shoot from different angles. First try a street portrait from eye level, then a second one, but from a foot or so down. After that chose another motif, perhaps standing on a stool, then same motif again, but with camera on ground. What's the difference?