I'm having trouble lighting headshots properly. I keep getting a god awful shadow directly behind them no matter how I switch the lights around. I have them stand about 4 feet from the background. I have two lights on stands with umbrella bounce, the same height as the subject, one light on the front left, one on the front right, slightly angled toward the subject. Obviously I am clueless. I have tried looking up online, but no luck. Any advice is greatly appreciated.

