Hello Dave, welcome to the forum. Thanks for jumping straight in...I wish more would follow suit.
At first I was going to type..."the shape, as you'll know, isn't quite right...", but then when I looked again I had a rethink. I the shape is fine for what it is. It looks stable, which for a goblet is a perfect state.
I don't know what it looked like prior to the re-work, but can imagine, and I think the end result is good. It has interest and contrast. Overall a good looking goblet and not the norm, so well done.
Andy