the screenshot could be better, you included the portrait of the man, wich is good, but the small man in the corner could be way wider, it doesnt matters if it covers a bit the portrait, it would be original tho.
just make the nose in the UV smaller, and it will be less stretched, instead the skin next to the nose will be, but that's not important.
oh he looks like a edited marine, not a blatant recolor, it must have took some effort and time to do this. in this screenshot he doesnt look like very thought, menacing or harsh, you gotta fix the UV some more, its not perfectly placed. let me guess you used burn n dodge in most places? at some places there are "holes" ( where there is too much dodge/burn at one point, or where there be a lack of it, and in its surrounding there is ).. try to use the smudge tool ocasionally, better at 80%, so it looks like more blended and equal.
not a good skin, but have potential, someone people could use it now. it's not horrible, but there is always some flaws, but its way better than 3/8 of the content that is submitted here ( recolors, lack of effort/ editing )