I love this bust and your version of it is great, the face is superb.
What I'd like to say about the gambeson is that a real used one has the colours you've chosen in reverse.
That is the raised padded parts are usually stained dark grey from the contact with the chainmail worn over the top of it, whereas the deep creases in between remain the original off white.
I hope I've explained that ok, but here's a photo which shows it to some extent, it's most clearly seen on the sleeves but a well used one will be darkened all over.
It may seem counterintuitive to paint it that way but that's what a real battle worn one looks like......cheers.
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