Thanks for your comments, Charlie, Akira and Erik. The problem about things like contrast, final cropping, etc is that everyone's taste differs; it's fairly rare to get total agreement.

Charlie - the image was shot on Agfapan 100; 6x7 medium format. My scanner renders it as quite grainy; I don't know why - it's not a grainy film.
Vuescan - I hit the "Cancel" button in mid-preview-scan. This detonated a virtual bomb in my system and I suffered the worst crash I have ever had. Vuescan would not quit, would not restart, would not force-quit; no other software would run or could be launched; the computer would not restart or shut down. When I finally regained control of the computer, several bits of software - including Vuescan and Photoshop, had to be deleted and re-installed. The whole thing cost me four hours and some data-loss.