You haven’t seen anything yet.

That’s the ominous warning from Australian co-captain Ruan Sims to the rest of the women’s Rugby League World Cup.

The defending champions have made a flying start to the tournament, toweling minnows the Cook Islands 58-4 and the highly rated England 38-0.

But ahead of their final pool game, against Canada at Southern Cross Group Stadium on Wednesday, Sims said they weren’t yet anywhere near their best.

“From our perspective there’s a lot we can improve on from the last two outings,” Sims said.

“I think it speaks volumes about us, having that growth mindset, we can cast a critical eye over our performances and see where we can improve.

“There were a few areas where we can improve in the last game especially.

“We’re definitely going to work on it against Canada tomorrow and then going into the semis.”

Sims pointed to their 68 per cent completion rate against the English as an area where there was room for big improvement.

She said the side had “a good 20 per cent growth” despite conceding just one try in the last 160 minutes of football.

Unless PNG can cause a major upset and beat the Kiwi Ferns on Wednesday, Australia will also meet Canada in Sunday’s semi-final.

Coach Brad Donald is expected to rest many of his star players for Wednesday’s clash with the Ravens ahead of the knockout stage of the competition.

While the Canadians, who are made up of mostly rugby union sevens players, are not expected to trouble the Jillaroos, Sims described them as unconventional and capable of hurting them on the scoreboard.

“Their background is rugby union and sevens and that is just such a dynamic space in women’s football,” Sims said.

“Briging that into rugby league really adds an another dimension that we haven’t seen before.

“It will be very interesting to see how we go against them.”