Thanks Mike. Other than what I have learned on my own in the last few years I have no background in art either. I appreciate you and others that give me criticism like this that I can use. It is one thing to color a photograph, but creating a shoulder is another.
Recently I was working on a 1890's image for a client and had to recreate most of a palm tree. That was a challenge as well, but I think doing something on the human body is more of a challenge.
Here is the train image as it was completed.
Here is the original LOC image: