That's a nice image Michael,
You may be able to overcome the issue you are having with your stars by simply doing some start shrinking. You can do this for all starts or select the bigger stars - I use Photoshop plug ins to help with these.
Also lots of tools around that can also help with reducing the elongation of the stars which appear either as coma or vignetting.
You also simply crop the image.
In terms of colour / colour saturation, here is another interpretation:
https://www.flickr.com/photos/johnka...n/photostream/
- it's all a personal choice I think.
Overall, a nice result, which with some image tweaking can get even better for you!
clear skies,
John K.