The Westfield Young Matildas beat Hong Kong 3-0 on Sunday night to round out their first round of qualifiers.
Australia has scored 23 goals and conceded none in wins over Mongolia, Lebanon and Hong Kong in a strong showing.
It means our girls have one more round of qualifiers as they seek to feature in the 2019 AFC U19 Women's Championship, and give themselves a chance to qualify for the 2020 FIFA U20 Women's World Cup.
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A first-half brace to Amy Sayer got the girls on their way, before a 63rd minute strike from Aoife Colvill put the result beyond doubt.
Australia enjoyed the early share of possession, and that set the tone of the game as Indiah Riley was brought down in the box just after 11 minutes. Sydney FC's Sayer stepped up to the mark and coolly slot the ball to the bottom left.
The Young Matildas continued to ramp up the pressure against Hong Kong, and were rewarded for their efforts just shy of 39 minutes.
Sayer cut inside to beat two markers, before unleashing a powerful shot more than 25 metres out from goal. Hong Kong's keeper remained rooted to the spot as the ball flew into the bottom right corner.
Australia took a comfortable lead into the break, but continued to build momentum after half time. Victory over Hong Kong was all but sealed in the 63rd minute when Aoife Colvill ghosted in at the far post to hammer the ball home.
The teenager, who plays for Canberra United in the Westfield W-League, has taken her club form into the international arena, having scored 42 goals during the Capital WNPL season.
The Young Matildas will now play a second round of qualifiers in 2019 for their chance at playing in the 2019 AFC U19 Women's Championship in Thailand.