The toppling of Wales came on the back of a 78-0 thrashing of England and 40-0 thumping of Samoa.
But the Jillaroos are intent on dissecting what they need to improve.
The performance could absolutely have been better, winger Abbi Church insisted at training on Wednesday.
"No performance is perfect, and there's always things that we can improve on," Church said.
"What we're trying to be in this camp is to be the best.
"(We) reflect on our own performances and be quite critical and look to where we can improve individually and as a team."
Sunday's win secured Australia's in the semi-finals on Sunday against Fiji and the side aren't buying into the bookmakers belief that it'll be another walk in the park.
In their World Cup pool, Fiji pummelled Papua New Guinea 40-4 and France 54-6, after giving New Zealand a run for their money and falling short in an 18-12 loss.
Church said the Jillaroos squad watched that game with a close eye.
"We know that Fiji did put in quite a fight against New Zealand," she told the media.
"We know they're going to come out this week and we have to obviously be prepared for that".
Coach Jess Skinner believes it will be challenging to face off against a Fiji side carrying so much belief and an underdog mentality.
Fiji are a dangerous side that are quick with the ball, Skinner said after the Wales win..
"They've had an outstanding campaign, and what they did to the Kiwis put the rest of the competition on notice.
"We'll go to another level this week, do our due diligence to make sure that we're prepared best on both sides of the ball for them.''
