As I said, my objective was lighting from below, so I was a bit limited in my angle. I didn't want a brilliant white backdrop. Not saying it works as a finished image - no excuses intended, just given the parameters of the exercise, the angle was limited.
As for the teacup being too dark, I think you guys are right. I tried to provide some bounce, but it was not adequate. I should have tracked down a my vivitar speedlight I have buried somewhere...