Looks excellent so far. Great texture, I really like the expression, and the face seems very authentic and believable.
There are a couple of things that could use a tiny bit of help, though. The right nostril (his left) is too low. Check your anatomy by duplicating the entire image onto a new layer. Expand the canvas to the right, then flip your new layer and slide it over the original layer, lining up where the two halves should meet. Clicking that new layer on and off, you'll see some symmetry issues with the nose, and a bit with the mouth.
Apart from that, I'd get a bit more highlight on the nose and the apple of the cheek. There is a sameness to the highlights there that flattens the surfaces. I think the same could be said of the lips and chin to a lesser extent. Use the detail on his eye as a guide and get that level of shine and detail into other parts of the image, and I think you'll have a real winner on your hands. But again, great work so far, wyldmajik. Looking forward to seeing the results!
Nick AvalloneAngryFungus Art Blog