Any thoughts on the clothes?
I think your clothes, and the dirt deco, look terrific!
If you can find a tan or olive brown WWII tie on ebay, try that. There's probably tons of them. Search 'german shirt' or WWII shirt, sometimes the shirts come with ties and aren't listed.
Here's a mustard tie that you could dye darker tan/brown:
https://cgi.ebay.com/1-6-Did-80037-WW2-Otto-Bittman-Yellow-Tie_W0QQitemZ170454752217QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item27afe51bd9