Main light seems pretty low, causing some kind of unusual lighting in the top of each eye socket, and catchlights very low in the eye. The shirt blends in with the background quite a bit, making this sort of a "floating head" shot on black. You handled the light on his face on the left side better in this shot; looks like maybe a blue gel on that one? Compared to the earlier shot, this one is much more subtle in the lighting effects. Another light behind him, fired at the background, to show his outline, would have eliminated the floating head thing. I think though that this is a lot of progress from the earlier shot!