Ed,
I really like the body of the piece, the shape and especially the colouring, but like a few others the top part (lid) fails in my opinion.
Reasons: The bead is central, it should have been at a point 1/3rd up (Rule of thirds). The top of the 'lid' diameter is smaller than the diameter of the part that fits against the vase form, it should be the same size or preferably a little larger.
So if the bead had been lower, and the section above more flared it would have sat far more happily.
But again, that is my opinion and I am quite sure there are many that would disagree with me.