O’Neill noted that it will be a different experience to both Saturday night and the friendly games against other Euro 2024-bound opposition in March when Northern Ireland drew with Romania and beat Scotland.
“It isn’t a defensive system, it can be adapted to be an attacking system and we expect to have more of the ball,” he said.
“The challenge for us is to be good on the ball. We’ve been good in transition and we’ve been good on counter-attack, but now we have to be good in possession as well.”
Although goalkeeper Conor Hazard is O’Neill’s only fitness concern among the 25-man travelling squad, the manager is expected to rotate and is anticipating Andorra will make things awkward for his side.
“It’s a totally different game. Andorra are a minnow but they’re still a difficult team.
“You only have to look at their results. Bigger and stronger nations than us have won against them, but they’ve not won by a big margin.
“Nobody likes to be beaten the way we were by Spain but we had 20 minutes where we played a team right at the top of their game and it just went away from us. But I thought the attitude of the team in the second half was great.
“We just want to finish off well now and have a good performance and result.”