Hi Gary,
As another turner of goblets, I think you did excellent if this is your first... my first didn't look quite so delicate. What is the wood... looks great.
What tool did you use to hollow the cup? I have a termite tool that seems to work best for me.
For the stem, I tend to use a narrow spindle gouge, but some times use a 1/2 inch round scraper ...
I've tried a 1/2 inch skew, but that give me problems.