England U21 boss Stuart Pearce was left to rue a number of missed chances to have taken a bigger lead over Serbia in their Euro 2013 play-off at Carrow Road.
Pearce's youngsters will take a 1-0 lead into the return leg in Krusevac on Tuesday after being restricted to Craig Dawson's second-half penalty.
England spurned several openings to add to their lead, and Pearce admitted his side had lacked composure in front of goal.
"I think you realise and I realise we created enough opportunities to be more than one goal in front in this tie," he said.
"I'm pleased to have kept a clean sheet and won the game but I'm a little bit disappointed that we haven't been a touch more clinical in front of goal.
"It has demonstrated to me the fact we can create chances away from home, we will have to take them because we might have to score on the road to go through in the tie.
"But Serbia have got to come out and play against us so it is all to play for as we thought it would be," added Pearce, who insisted his team would not sit back and defend in Serbia next week.
"I think we will try and win the game - we set up England teams, certainly at this level, to win every game and I think we will do the same again," he said.
"We won't be gung-ho but we certainly feel we have enough ability in our team and I think we showed that on occasions, we have got enough ability to win the game again on Tuesday."
But Manchester City midfielder Jack Rodwell is a doubful starter for the second leg after he picked up a hamstring problem during the first half in Norwich.
Pearce added: "His hamstring tightened up so we will see how it settles down overnight before we make any judgement on him. If he is not right he will not travel with us."