We agree with Geoff. Is good.
We reckon it's impossible to over-expose the brighter stars. Sure you end up with a white centre, but the glaring halo always retains the right colour, and with a cluster like this, you really want to retain the relationship between the hugely bright mega-stars and the tiny little cluster members and general milky way. You've done that.
(About the only reason we can think of that you might want to not over-expose the brightest stars is if there were two very close together, and you wanted to show that there were two. An example is the set of four (actually at least five) in the centre of the Trifid. The only way to show those as four stars (one of which is elongated) and also show the faintest nebulosity is to wreck the relationship between the stars and the nebulosity. Most people are willing to do that, because the stars aren't the main attraction. Even with brilliant double stars, diffraction spikes will often show them as a double. There's an example of that in the Corona Australis gas and dust complex. Here, in the Jewel Box, the stars both bright and faint are the main attraction, and you want to preserve the relationship between them. You've done a great job.)
