Arteta admits he felt they should've made the win more comfortable for themselves.
He explained: “Football is not perfect, but I'm really happy with the way we played.
“It should have been a much bigger scoreline. We made a mistake and they take the chance, and it's game on in the Premier League.
“We had chances and we didn't put them away, but we kept trying. We had some big, big chances to put the game to bed.
“We have to keep winning matches and performing the way we are. That's the challenge, to keep doing that every three days because we have another important game at Luton."