My pleasure Coriolis. Looking at it now I see that indeed this is not very clear. I used a small round brush to go in and add more white paint in certain areas of the rim in order for the light to appear more natural and not so uniform. The idea being to better capture the simulcra of worked metal. Here's a pic where I've indicated the places where I've increased highlights (part of the problem is that you can't really make these out well in certain areas due to the light background):

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