I have not ready anybody else's comments, so sorry if I repeat what somebody might have already said. On the shot of the man, the lighting is strange; his eyes are almost colorless and almost featureless. The catchlight placement is oddly low, and the eyes are dark, and look like a taxidermy glass eyeball...very unappealing. If windows are the ey into the soul...this guy's a mounted buck deer head. I don;t like what looks like a baseboard heater in the one area behind, nor the bit of pocket square showing....with a short-sleeved shirt? The low catchlight due to the low main light also lights up his neck too much. The lit-up frontal planes of his forehead, the dead eyes, the yellow top light on his hair, yellow light on his shoulders, ...just not feeling this one as a headshot. His head looks incredibly, incredibly skinny, and the 3:2 frame aspect ratio and your straight-on lighting angle, both make that even worse.
The woman has the opposite issue: too prominent on the catchlights. The rounded under-chin reflector's signature catchlight look is unappealing to me. The camera is way high up AND she's also placed way too low in the frame. Look at where her chine, eyes, and top of the hair are--all three of them, within the size frame you used. Her chin is "dragging"... her eyeballs are wayyy too close to the middle height of a 3:2 frame.
Her patterned scarf and hot lighting on the cheeks, and the dual, stacked figure-eight catchlight is a very off look. The fly-away hairs needed to have been smoothed, or cloned out carefully in post. Style the hair on the ends of the A-line cut at the shoulder. The scarf is a very distracting, boldly-patterned one, and it is a very strong, disturbing element.
Both of these have the chest plane and the facial plane in alignment, with the light smacking them both square in the chest...very unfeminine for her, and visually boring....a headshot needs to be dynamic in lighting...having the chest and the face in the same axis on a woman looks masculine, and dull.
Despite my dislike for the lighting used in the shot iof the guy--HE looks very well-groomed,l coiffed, and presented pretty well. The woman's photo OTOH, her shot is a trainwreck, it really is. Just so many really basic, fundamental elements violated, to no creative redemption. His shot, although *I* might not like the choices made in light, is much closer to a decent headhshot.
If you want to use that light--use the Iris Enhance tool, and the dodge tool in Lightroom, and get some iris and pupil showing, and get some eye color in the eyeballs!