After finishing in the silver medal position at the past two Junior World Championships, the pair showed they are ready to compete against the very best in the world, to record Australia's best World Championship result since Anthony Liu finished seventh in 2002.
The pair started off in the short program scoring 61.85 points to be ranked in 11th place, with just one mistake holding them back from a higher score.
In the free skating final event, the pair had an unbelievable performance to score a personal best 127.52 points, the fifth highest of the round, moving them up into eighth place with a total score of 189.47, also a career best.
In first place was Miura Riku and Kihara Ryuichi of Japan with 222.16, with Alexa Knierim and Brandon Frazier of the USA in scoring 217.48 in second, and Italy's Sara Conti and Niccolo Macii in third with 208.08.
Also representing Australia at the World Championships was Holly Harris and Jason Chan in the ice dance.
The couple reached the top-20 free dance final skate with a 16th place performance in the short program scoring 64.80.
In the free dance, the couple improved to have the 15th best performance of the round, scoring a career best 104.67 points, giving them a final ranking of 16th overall with a total score of 169.47.