Sorry Greg...I'm going to be brutally frank on this one...
As Maxwell Smart was fond of saying "missed it by that much"
I've taken the liberty of uploading a section of your image to illustrate my point...weird-purple dots at 2 o'clock ...which I guess are Red/Blue registration errors. Stars are a tad elongated...but hey...many including yours truly... often don't nail that down.
Getting back to the registration error, it will kill correct star colouration, with many of them looking a bland white, rather than reflect their true colour-temperatures.
You've also got a horizontal row CCD blemish...about 1/3rd the way down the chip that could be easily taken out with a bad pixel map.
The nebula colours are pastel looking to my eye, and the dynamic range of the data looks both clipped and compressed...more the pity... as you totally nailed the framing
That said, I can see that sublime AP RHA singing an Aria for you soon
