Inside the booth
Use a low camera angle deliberately
Make a creative angle comfortable and reversible.
A low viewpoint can make an unusual portrait, but it also changes what the narrow strip includes. Test it as a creative choice rather than a default setup.
Make a normal comparison
Take one neutral sample before lowering the camera. Keep the source so you can compare the change in face, shoulders and background. Ask the sitter which appearance they prefer; an unusual viewpoint is not automatically more flattering or more truthful than a straightforward portrait.
Check the surroundings
Look for ceilings, lamps and unrelated objects entering the frame. Keep the device support stable and do not place equipment where guests might kick it or trip over it. Avoid requiring uncomfortable neck or back positions merely to compensate for the selected angle.
Use the final strip crop
Inspect a completed sequence. A dramatic full-frame sample may become a cramped close-up once placed in a narrow window. Keep the original photographs and an alternative conventional strip when useful. Record the viewpoint as an intentional creative treatment if the context of the portrait matters later.