Here are the things I see in your cropped and tweaked version of the photo:
1. The edges of the cutout are much too sharp / imprecise. This is like announcing to everyone: "This has been Photoshopped". There are lots of techniques to improve this which have been discussed in previous threads here on PSG, but, because of limited time I made almost no effort to fix this.
2. There is a overall red cast in both the highlights (eg, whites of his eyes, shirt) and shadow areas (eg, hair) of the photo. A viewer's eye needs some light and dark areas that are essentially unsaturated in order to feel that the photo isn't seriously flawed. This above red cast is completely separate from a white balance that is also too red. This latter problem is most apparent in the mid tones. One can reduce these problems using the white balance and hue/saturation sliders in ACR, as well as tools such as "selective color" in PS (move the cyan slider in the red section to the right).
3. I obviously don't know the gentleman in the photo, but my guess is that his skin tones are much too saturated.
4. The photo is not sharp. I used a combination of "anti-shake" (new in the CC version of PS), and a plugin called "Focus Magic" to try to help this out. One has to be careful doing this because it's easy to introduce ugly looking artifacts when sharpening a photo, and do more harm than good.
5. It looks like you applied a bit too much of either "clarity" or large radius USM, bringing out every wrinkle in the guy and making him look older than he really is.
6. He would look much better if the oily reflective areas on his skin were not there. This should have been dealt with at the time the photograph was taken wiping them with a towel and/or applying makeup, but since it wasn't, we'll have to fake it using the patch tool to patch non-reflective areas of skin over the reflective areas. The risk in doing this in PS is flattening the features of the face.
Anyway, here's a 5 minute quick tweak to illustrate some of the things that could be done to help out this image. He still looks awfully red to me, but not knowing the man, I didn't want to go too far and risk color changes that might not look natural.
HTH,
Tom M
