Hi Darrell, I'm not much off a beginner to lighting myself, so please take my comments with a pinch of salt, but here goes:
1. Without catchlights (yes, there is the tiniest in the right eye), the eyes can end up looking a bit flat - if that's the intention then great, but otherwise I'd be tempted to choose the light placement and/or pose to create a catchlight?
2. Small and/or far away light source does lead to a fairly hard shadow line from the nose. It's a "look" but I find it slightly distracting personally, however...
3. Your lighting does create really good falloff on the left side of your face, which accentuates the cheek - as Craig has said, this can be a good thing for us blokes
4. As others have said, the background is good, although that does create a slightly imbalance between the shadow areas on you and the fairly light background. This could be a belter with a dark (or fairly dark) background and maybe even a touch of rim lighting from behind?
5. The gelled back hair would be worth accentuating IMO - either a hairlight or tweaking light placement to give it some?
6. The lighting on the jacket works really well for me - it really gives definition and a sense of texture
7. But I'm not a fan of the shadow of you on the background - easily fixed though my moving further away from the background so you don't cast a shadow on it (or at least not in frame)
Also worth saying I really like the processing - that slightly desaturated look works really well for me, as does the textured background. I hope you don't mind me providing my own thoughts when I wouldn't probably be able to produce as good a shot myself but to be honest, I find providing crit helps improve my own photography as it makes me really think about a photo... so I'm basically just being a bit selfish!