"It makes me feel so grateful and humbled. Like, this cast, and everybody here on the show, it's just a big family. Everyone has been super supportive," she said. "I'm just ready to dance! I haven't danced in so long I'm jittery. I want to just go, you know?"
Carson is partnered with Olympic luger Chris Mazdzer for DWTS' all-athletes season, according to the pair, things are going well so far.
"He's got some rhythm, for sure. He's got this strengths," Carson teased. "He's doing pretty good. I'm pretty impressed."
"There's so much technique involved... I knew it wasn't going to be easy, but there is so much technique that I do not have, so Witney is a fantastic coach," Mazdzer added. "We both speak sarcasm fluently, and it's some tough love on the dance floor right now."
As for who the duo sees as their biggest competition, Mazdzer's already got his eye on Kareem Abdul-Jabbar -- as well as the three figure skaters (Adam Rippon, Tonya Harding and Mirai Nagasu) on the show.
"They've had a lot of success on the show, for sure. A lot of them had won, so we're definitely eyeing them down," Carson confessed. "They're going to be our biggest [competition]."
For Mazdzer, however, the biggest challenge is going to be "getting out of my own head." "Like, stop being self conscious and just go," he told ET. "Got a good partner right here, though. A good coach."
Dancing With the Stars: Athletes premieres Monday, April 30 at 8 p.m. ET/PT on ABC.