Kenneth Heiner-Møller's side will be meeting the Africans for the first time at the international level in their Women's World Cup opener at Stade de la Mosson.
In spite of their fine preparatory run-in, the Manchester City forward is wary of the threats the Indomitable Lionesses could pose.
“Cameroon are definitely a high-quality team and they pose different threats than teams we face normally,” Beckie told the Canada Soccer website.
“Their transition is really good, they are very quick, they have a lot of range in the back, so I think we need to be aware defensively.
"We just need to impose ourselves. If we focus on ourselves, I think we can get the result.”
Ranked fifth in the world, Canada are among the favourites to claim the title and will aim for a winning start on Monday.