Yep, an enjoyable image Andy but don't talk to me about tilt!! It's the bane of my existence!
Colour & composition look great! I'm going to have to comment on the overly smooth look though. I think there could be some tonal detail missing in at least 1274 and 4685 and you've got a bit of noise in there too in the darker star fields. I hope that isn't being too picky - at low res it's a very pretty image. I'm basing my opinion on other renditions including
my own LRGB from 2010.