I am completely out of my depth with pieces like this and have never turned a hollow form of this nature, but that doesn't stop me admiring the quality of the work that goes into them. In profile, it breaks every version of the rule of thirds, that ever was written and to get away with that, the profile needs to be perfectly clean and split 50:50 (in other words symmetrical) and you appear to have achieved it here, Fuzzy, so it works well.
Les