Hi John,
Now I can see it:)
You will hopefully soon receive some pointers from others on the forum who are more adept than I am. I'd definitely say that what you have produced is extremely impressive.
If a good image is one where noise is well controlled, there aren't any blown out parts and the detail shown is commensurate with the equipment being used and not looking false, then in my opinion you succeeded. It's not possible for me to tell here on my tablet if there is any clipping of the background, but if there is a trace then I'm guilty of that many times and I don't think it detracts at all.
The star colours in narrowband will not be accurate unless you have also captured them in RGB and used those. Not worth the cost or effort imo since the nebula itself is in false colours. I'd have been 'chuffed' to have produced something like that as my 103rd image, that may give some perspective of my own skills.
You now have an excellent image to help you learn more techniques that are now available more than ever. You may have already done so, but if not I'd highly recommend viewing as many YouTube videos as you can. Topics such as masking, particularly colour masking, star colour calibration and stretching methods just a few. Others I'm sure will recommend other things to look at. I am subscribed to so many that it might be easier if you told us whose videos you have been viewing, and take it from there.
Even after doing that then for this image it's unlikely you will be able to make any obvious improvements. Different colour palettes, slightly smaller stars possibly.
Apologies for rambling on for so long John without offering any proper constructive criticism as I feel that I'm in no position to do so. I just wanted to offer some encouragement and congratulate you on a really excellent image.
Cheers,
Ray