Shadows, Catchlights can give-away a lot about the lighting setup of an image.
However I find shadows hard to read, so I'm looking for advice. Below each image is my attempt at deciphering the lighting- I'd like to know if you disagree.
Single-strobe, diffused. Placed 45 Degrees to the right of the head; I was tempted to say subject-right. However when I noticed the left-side of the leaf and the catch-light, I changed my mind.
Between the camera and subject vs behind the subject; the former, as the the exposure on the chin would be much lower were it behind the subject.
Update:The structural definition of the leaf had me confused on hard vs soft light. However zooming into reveals sharpening artifacts.
Single strobe. Subject-left; totally unexposed jaw.
Hard-lighting; snoot, box/grid. To only light the tops of the snake, I suspect the light was pointed upwards.