I'm good at telling stories (and apparently decent at running roleplaying games by extension), learned to include lots of drama and onomatopoeia from my dad's side of the family where they're all...well I don't know about master storytellers but most if not all of them seem to know how to tell very engaging stories XD
it makes my audience laugh or at least be entertained
And that's pretty much it. I got nothing else going on ^_^;
I think Australians in general are pretty good storytellers - it is something about valuing the "yarn" in the culture perhaps.
Laughter is a good indicator. These days, I am good at making people depressed after describing the world I see :D
Going by that I would have more associated it as an "Asian" thing as my generation was the first one born in Australia, the parents' generation are immigrants XD Guess that helped them "fit in" :)