Miss Jackson arrived back in Balclutha with both the champions title and the 14 to under 18 years trophy.
She estimated her winning entry - a ceramic planter with a woodland scene and two raccoons - took about 19 hours to finish, with each colour applied three times and touched up after the first firing.
Miss Jackson started taking Saturday morning ceramic classes at the Clutha Ceramic Studio about five years ago, and said despite her win, it would only ever be a hobby.
Elaine McKenzie brought home the underglaze trophy, Frances Staples won the figurines trophy, and Mavis Gunn was awarded the 10 to under 14 years trophy.