The Canaries could count themselves unlucky to lose to Villa after being denied on several occasions by an inspired Brad Guzan.
The defeat leaves Norwich with just five points from their opening five games, but Howson is confident they will turn things around and says had it not been for Guzan they would have taken all three points against Villa.
"Sometimes these things take a while to bed in properly but on this showing I don't think there's too much wrong," Howson told the Daily Star.
"We created the chances and on another day we could have scored three or four goals. But fair play to their goalkeeper he has pulled off some top-class saves.
"We are obviously disappointed but I think when we look back at it we will see there were a lot of positives."