The host - who previously said that she wants to "get great" - explained that she is trying to better her performance each week.
"I'm still learning," she told People. "I'm still just trying to get better and better every week."
Kardashian also suggested that she will have more opportunity to shine as the competition progresses, saying: "I like constructive criticism, but still it's only a one or two-hour show, and there's still so many people. I just don't have time to just talk and be myself yet.
"And right now, it's so technical. I feel like when more people go, there's going to be more time to fill. And I feel like that's where I can kind of do my thing."
Kardashian added that her husband Lamar Odom has joked about her wardrobe malfunction on the first X Factor live show, saying: "The only tip he gave me was don't show your nipples anymore. He said, 'Please do not have your [breasts] out'. I said, 'Oh, good tip'."
The X Factor USA airs Wednesdays and Thursdays on Fox.