The Everton striker said that the result has given Gordon Strachan's squad the belief that they can compete in the Euro 2016 qualifying campaign.
"Since I've made my international debut this is the most confident I think the squad have been," he told BBC Sport. "We really believe that we can go into this next campaign and challenge.
"We've shown a lot of potential now and it's time to fulfil that. Hopefully in the next campaign we can start well, push on and get where we feel we belong - at the major tournaments.
"We've got midfielders, especially, that are real, real quality. Players that can see the passes that cut teams up."
The draw for the Euro 2016 groups takes place in February next year.