Luiz had a mixed full debut for Villa, as they were beaten 2-1 by Bournemouth.
The Brazilian struggled at times in the contest, and was partly at fault for the second goal that Villa conceded, as his error was punished by Harry Wilson.
And Smith felt that Luiz needed to speed up his game, as he was wanting too much time on the ball.
“Dougie is the sort of character who won’t let a lot bother him too much – and you could see with how he got on the ball,” he said.
“I asked him at half-time to just quicken it up a little bit. I think he took one or two too many touches in the first half.”
It is hardly a surprise that Luiz is going to need time to adjust at Villa, as he is only just getting his first taste of Premier League football.
Luiz has impressed in La Liga, but the pace of English football is faster.
It was not all bad for the ex-Manchester City man yesterday either, as he did score a belter in the second-half, when he proved just how much quality he possesses.
Villa are still looking to claim their first points of the season, after losing their opening two matches since promotion.
Have something to tell us about this article?