And it's usually people like me that have to do it...
Skalman, you should take a step back from the model for a few days. Fresh eyes will make it easier to be judgmental on it. Right now there are some more fundamental issues with your anatomy. For example, the transition from his face to his head is very sharp, he has no muscle mass on his calves, his chest looks too big for his waist, and his eyebrows look way too pushed out which kind of makes him look like a neanderthal. If you want this to be realistic, you can't rush things. I know it's tempting, but a likeness can't just be achieved in textures.
if you have read that solid angle tute on skin then its pretty clear what to do.
its all down to the diffuse really in the end and how you balance that out with the sub and back scatters...
theres no quick way other than to study it and do it
Jay