This is my first attempt at a portrait. I have not used lights before, and am learning. I don't know any of the tech terms yet. I used single light positioned in front of my model. Aperture was 6.3, and shutter speed, I believe was at 1/125. Does that sound right? Please forgive me if I got it wrong. I am just playing with lights right now to learn how to best utilize them. Any CC would be most appreciated!