Some of the guys know that I like to reproduce a photo as best I can. Mine are of aircraft but the principles are the same.
I think you've already done a pretty good job with that one!
The first thing is that various reproductions of the same photograph can vary enormously. Secondly the type of film used,the exposure and development as well as the various filters that might have been used when the original was taken all add more uncertainty.
Your original photograph looks over exposed to me to start with.
I can only tell you what I do. I try to match the known original colours as best I can and then weather the model to match the original.I then take a photo,trying to establish the same viewpoint. After that I play with the image using photo editing software. This isn't cheating,it is the only way you are going to get remotely close to matching an original. Sometimes very little adjustment is needed. I took a photo of a Hartmann Bf109 a while ago,took out the colour and was surprised just how much it looked like the original!
Here's a series I did of an Me262. The slight variation is that my model is "coming in to land and surrender" rather than exactly replicating the reference.
Reference.
Model,B+W and minor adjustments.
Model in colour.
You can see that my "colour" model doesn't look much like the B+W reference photo,but in the adjusted B+W image it's close enough for me
Cheers
Steve