I can see why you're pleased with this image Mike.. I sure would be. Lovely field.. holds up real nice when viewed big on screen.
If you're looking for how to squeeze the most out of it, I agree with Marcus and Paul. For sure you want to show the cirrus and you've done very well with that.. but it should be possible to have some very nearly black pixels in the image somewhere. I would be using some kind of curves adjustment to try and stretch out that dark end towards the black point a bit more.. should give even better visibilty of the cirrus (but will kill some of it for those with poor monitors).
And there is some kind of purple/magenta cast to it.. I think it's more due to the star colours than the background. Your other image that Paul linked to has a nice mix of yellow and blue stars. This image seems to have yellow and many purple stars (some blue but not so many). Don't know how you managed it but if you could fix it then it really would be a cracker!
Phil