Studio quality invisible background is how you get a black background behind any subject.
SCIBB stands for studio quality invisible black background. To get this black background your shutter speed should be 1/250, ISO 100, depending on if you’re outside your F-stop should be F/22, inside F/5.8-8.
Using a speedlight is how you get that spotlight look. Also make sure you are creating a triangle with you, your light, and your object. Doing this will make sure that you are in a good position with the light shining on the subject.
Set up shot
Other SQUIBB examples: Glyn Dewis