All that is left is up to individual taste.
You could, for example, use the 'Reveal' preset in the HDR module to dig out the details around the keyhole nebula that are currently less visible as that region is currently very bright.
Wide fields like these have a lot of stars, which sometimes make the more interesting larger scale structures harder to see.
There are a number of things you can do in StarTools to improve things, for example, you could simply shrink the stars a little;
Create a Star mask; set Exclude Color to Purple (don't look at red, blue or purple features), set Feature Size to 4 (just look at the smaller stuff), set Filter Sensitivity to 10 (less sensitive).
The launch the Magic module. I set 'Mask Grow' to 0 (no extra mask growing).
I then used the Life module's Isolate preset to retain and enhance super structures, while pushing back non-super structure features (e.g. stars). It's one of my favorite modules in StarTools as it really helps bringing out the more interesting features in an image. You'll notice now, for example, that the focus is now more on the
clustering of the stars and density of their distribution, rather than the stars themselves.
Lastly, I used the flux module with the Sharp preset, which I then tweaked to taste, to sharpen up the image a little bit.
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- rowland_eta_ST13.jpg (1.67 MiB) Viewed 7031 times
Like I said - it's all down to taste or what you're trying to accomplish!
Hope this helps,