Thank you all for the comments, particularly to Mick for clarifiying your comment, taking the time for a personal message in this time of uber screening for queue reduction is much appreciated.
I have reprocessed the images from the original files and re-uploaded. I paid particular attention to Jeff's technique and these images seem better to my eye - they are definitely a little darker and a little "richer" with the hilights a bit under control. Comments always welcome, though!
One day, I might be good at this...