how to make an good slogan?

Question

the slogan is related with Jepara as the center of the carving world

Answer 1

Make it short and to the point so it is memorable like Jepara the center of the carving world or when you think carving think Jepara. People who haven't heard anything about Jepara won't still know anything.

Answer 2

Make some kind of play on words, like Jepara: furnished with pride. Or who wood have thought Jepara would be so good at carving?

No so bad as those, but hopefully you get the idea