The actress told Collider that she had initially struggled with the visual effects employed in the new CW series.
"A lot of it is CGI and green screen," she explained. "I think that will be a big part of our show, for sure."
She continued: "I'd never done it before, and it's something to get used to. It's keeping me on my feet and I'm challenged by it, every day, but it's something that I'm learning to embrace, explore and hopefully master, at some point."
Robertson, who plays witch Cassie Blake in the supernatural drama, also revealed that she is keen to distance herself from her role on The CW's Life Unexpected.
"After Life Unexpected ended, I wanted to do something that was completely different from [my character] Lux and that show," she explained. "I wanted to be able to keep my fans, but not have them confused about who I was or what my character was."
She added: "I'd never worked in the supernatural genre, or done anything like that. Something that [showrunner] Kevin [Williamson] was a part of, in that world, seemed so appealing to me."
The Amazing Spider-Man star Kevin Zylka recently signed up for a guest role on The Secret Circle.
The fantasy drama premieres on September 15 on The CW.
> Thomas Dekker teases Secret Circle role
Watch a preview of The Secret Circle below: