I agree with kbade that this is much improved. Though I'm wondering if you shouldn't focus on a single, predominant light source. The shadow behind Vicki suggests that the light is coming from below and in front of her (very strongly). Yet there also seems to be light coming at near floor level from the camera at almost the same intensity (suggested by the highlights on Vicki's legs, Mike, and the lower portion on the couch's arm closest to the camera.) Also both light sources I mentioned would be in an unnatural location given this scene.