Hmmm.

I see you were going for high contrast lighting. I think it's an OK attempt but something seems a little off overall on the top two images, hard to say what. W/ the top one, the light seems so strong on that side that I expect him to squint. With the second one, it's so dark on one side I can barely make out his eye there, which could be Ok for a moody shot, but in this one he's smiling as if it's a catalog shot, and the lighting will never be like that in such a shot (needs to be smooth and even).

The bottom one intrigues me, as it has mood and a lot of interesting elements - hat, unshaven model, beer, interesting pose. It's slightly blown out on the Corona label, and may be a bit soft/edited in the mouth area. What makes me wonder though is, why the light is strongest on the beer? That will make the viewer immediately look to that area, but then I wonder, is it a beer ad, or ? Another nit would be more space above the hat, slightly less behind his back, and maybe a tad more light on the back of his head (very much a nit pick on that one). Very good shot overall though.

G

Ps - Tough contrast situation with the white shirt and black vest, but I think it would be better to move the main light closer to the model to make it smoother, decreasing the intensity as needed so not to overexpose.