I've been working with a one light set up for quite some time now, but a little extra light and movement can go a long way when shooting. Once the main light was set I used a kicker light (camera left) with a green gel on it to add a little flare. I started shooting in front of the model, although the shots were good, simply moving 4 steps to the left made for a better shot. I've learned that once you get the model in the pose you want, you should do the moving. Different angles create different looks, so just kick and adjust.