In this picture I used a white background. I’ve placed 2 strobes on the background to give it a white effect. To control the shadow , near my camera on the left side there is a strobe with an umbrella and on the right side there is a reflector. I’ve measured the background and make it one stop overexposed so that it will remain white in the picture. I’ make sure that there is enough contrast between the background and the shadows by placing the umbrella and the reflector not to close the the model. Focus was 60mm F11 and 1/125sec shutter speed at 100ISO.