one strobe covered by a small soft box lighting at the left side of the model towards the camera creates the highlight and shadowside on her face and a gradation on the background which is darker at the the highlight face side and brighter at the shadow side.
the light is about 15 feet from the white wall and the soft box is feathered down towards the floor with model 2 feet below the soft box which creates a black background.
Using the 250watt halogen bulb, light coming from above right side,angle of inclination, about two feet distant with model, with shadow covering eyes, naughty.