This is a pretty good image for two nights imaging Dave. Perhaps look at only keeping data below 2.8"FWHM. It might not seem much of a difference but you will have sharper data to process and therefore less blurring to deal with.
The colour needs to be less magenta, the galaxy looks to be magenta rather than little pockets of magenta. One has to be careful about the impact of the those regions bleeding into the blue stars in the spiral arms. I know for a fact that it is one of David Malin's pet hates.
Overall though a good image in my opinion.
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