The Black Stars were on Monday beaten by USA in their group opener at the World Cup with goals from Clint Dempsey and John Brooks giving the US a 2-1 win despite a late equaliser from Andre Ayew.
The defeat has left the Stars in a precarious position, possibly needing to secure maximum points from their two remaining group games to progress from the group.
Appiah was critical of the performance of the strikers and midfielders for failing to convert their chances. The Black Stars had 21 shots of which only 3 were on target (excluding blocked shots).
“I have learnt a lot, considering the fact that when you create chances and you are not able to finish it comes down to whether your midfielders or strikers are doing the right thing at the right time,” Appiah said.
Appiah has however assured Ghanaians that team would study the game and revise any mistakes that were made.
“We need to go back and see our mistakes and correct them,” he added.
On the crucial game at the weekend against Germany, Appiah said: It’s not going to be easy to qualify from the group, but we’ll give everything to do just that.
“We’re going to have to play well against Germany and I know we’ll give them a good game.”
The Black Stars face the Germans on Saturday and then take on Portugal five days later.