Singapore assistant coach Aide Iskandar believes his players need to work on their finishing ahead of their last game against Hong Kong.
"I think it's all coming together," he said at a press conference on Monday afternoon, where he was standing in for an ill Bernd Stange.
"We drew a lot of positives from the match [against Papua New Guinea] but of course we would like to have a better showing against Hong Kong.
"What was missing, or something we can work on, is our finishing because in the Asian Games, when you have chances you need to be clinical to win games."
Aide was also quizzed about the difference in quality between the recent friendly opposition and Singapore's group stage opponents.
Singapore are ranked 152 in the world in FIFA's latest rankings, and will face Oman (67), Palestine (88) and Tajikistan (120) at the Asian Games.
Papua New Guinea (200) and Hong Kong (162) are both ranked lower than Singapore, although the latter opponent beat Singapore 1-0 in Hong Kong last year.
"With the tight schedule of both competitions, the Malaysian league and the S.League, this is the best possible preparation that coach Bernd has come up with," Aide said.
"We have to work around it with the challenges we face and I think it'll be a good motivation to face [those strong teams] at the Asian Games.
"But again I think we shouldn't disrespect Hong Kong because they are a good team that beat us last year.
"We are a young team compared to last year so I hope these young boys can step up and show why they're selected for this match."
The Singapore squad will be flying off to Korea for the Asian Games on Thursday, although there are still question marks over a few key players.
Midfielder Hariss Harun is still involved with Johor Darul Takzim's (JDT) Malaysia Cup campaign, while full back Shakir Hamzah has still yet to recover from a hamstring injury sustained during LionsXII's home game against JDT II.
"Of course we'd like to field our best available team [against Hong Kong]," Aide said.
"Shakir is still in the team and recovering from injury and we're still hopeful for Hariss.
"We have till Thursday until we travel and we're hoping Hariss can go because he's an asset.
"If Hariss can't go, we'll have to look at other plans; we have other players in mind but we can't disclose that now, because it wouldn't be fair for Hariss."
Image Credit: Abel Khoo/Football Association of Singapore