Beat Iraqis and then party, Schwarzer tells Socceroos Captain's strike: Tim Cahill helps Lucas Neill celebrate on Tuesday night. Socceroos goalkeeper Mark Schwarzer has warned his teammates to get over the euphoria of smashing Jordan 4-0 at Etihad Stadium, saying the task of getting to Brazil is "only half done." The splendid performance now means the Socceroos need only to defeat Iraq at ANZ Stadium next Tuesday to qualify for their third successive World Cup. They can be caught only by Oman, who would need to defeat Jordan at home and have Iraq draw with or defeat the Socceroos earlier in the evening. Jordan's goal difference (minus 10, some 14 goals behind that of the Socceroos) rules them out of top-two calculations, but they could still slip into third place, which would qualify them for an intercontinental play-off. That same play-off is exactly where Australia will end up if everything goes wrong next week - an unlikely scenario. However, Schwarzer does not want his teammates to take any chances, which is why he and captain Lucas Neill called the players together as soon as they returned to the dressing room after the match. "The performance was there again, we backed it up from Japan and we got the result that we needed," Schwarzer said. It was a feeling of satisfaction, of course, and we celebrated for about five minutes after the game and that was it, because we know it means nothing if we don't go out and win next week. This whole week leading up to the Iraq game is vital for us. Destiny is in our hands and the job is only half done. The full focus is about making sure everyone recovers well and is ready for next week. Schwarzer was particularly pleased at seeing Mark Bresciano get the Socceroos away to a fast start, which has not always been the case in recent times. "Other than against Japan, we've always conceded first," Schwarzer said. It's always put us on the back foot and has enabled these teams to time-waste. It's well known that's what they do. This was different, we were able to score first, and rightly so, and then we dominated the majority of the game and that was also a very strong message in the change room. We need to make sure that we don't concede first. You've got to really work on it and, this time, it worked perfectly well for us. Coach Holger Osieck had a blunt message for the Socceroos at half-time, saying they had spurned too many first-half chances - a message clearly heeded. "He said we needed to be more clinical and that we shouldn't be wasting opportunities," Schwarzer said. Inevitably, if you do that, you'll allow the opposition to get back in the game. Even early in the second half, we put a couple of sloppy balls away and put ourselves on the back foot a little bit, but we rode their attack and then began to hit our strides again. Once we hit our full stride and went two and then three-nil up, it was all over. Teammate Tommy Oar said scoring early against Jordan meant the opponents had to change their approach. "The first two goals were the most important, especially against a team like [Jordan], who sits back and defends, but when you score early it changes their game plan," he said. It was fantastic to win and we'll gain a lot of confidence from that, but we've still got a lot of work to do next week. Oar said fellow attacking midfielder Robbie Kruse - who scored one and set up two more - had now evolved into a "great player." Twitter - @sebth