I agree with caitsmeow, adding some brown would help a lot. Right now the picture is pretty yellowing green looking to me. Other that that I love the picture though.
Thanks for the comments from everyone. I have reposted this, in sepia, as suggested by several of you. I agree. Sepia is better. Reposted as "1951 Revisited/ version 2". If I knew how, I'd link the two, but that exceeds my technical know how at the present time.