A really nice job Paul - you are to be congratulated as turning a 'real' item is always more difficult that otherwise.
If I were asked for some constructive comment (and I think you are asking otherwise disregard) then the following couple of points come to mind after looking at the photos:
1) I think you need some demarkation between the 'egg' and the 'cup' This could be as simple as a bead or change in diameter but it does not look quite right at the moment (this could also be used to disguise the joint).
2) Be very careful with your sanding. On the base you have turned some some lovely detail and then the 'crispness' that stands out on top quality work has, to some extent, been lost with the sanding. It is not something I am very good at myself but is a criticism I have often been on the other end of.
However, all in all, a nice job and some real lightness of touch, especially with the base that really enhances the piece.