Strobist info: 3 flashes were used. One, extreme camera right and at 1/4 power, grazed across the front to light the white stripes (cash register paper actually) and union (blue mat board with stars cut from adhesive label paper); flagged to prevent hitting background or subject. Second flash is low camera left, gelled red, 1/2 power, fired at white seamless background. Third flash, high camera left and 1/16 power is snooted and directed at subject. All flashes radio-triggered.
Learn how to light at Strobist.