The North-West outfit have grabbed three victories from eight fixtures in the top flight, leaving them eighth in the league table on 11 points.
"I think we can improve on a lot of things, there's still a way to go until we're really at our best, but we haven't been playing that badly," Carrick told MUTV.
"Things haven't been going so well for us in terms of results, we'd love to score more goals, but the good thing is that we are creating that chances. We're making the opportunities for ourselves, and I'm sure they will start flying in soon."
United will switch their focus back to domestic commitments when they take on Stoke City this weekend.