The Glee writer, who is developing the potential FX show with Glee creator Ryan Murphy, explained that he doesn't know how people will react to the drama.
"You can't not feel [the pressure]," he told The Hollywood Reporter.
"Ryan and I try and make it what we think is good and then there's very little you can do about how people are going to respond. You can't make someone like it but you can hopefully get them, with the right sales pitch, to try it."
However, Falchuk explained that he understands the excitement that has started to surround the project.
"There's a track record that people say [Ryan Murphy and I] put out very interesting and unusual material, so you know it's going to be something you've probably never seen on television before," he said.
"In any medium the thirst for something really fresh and different is why I think there's been excitement for AHS. I also think that the horror genre is something people are intrigued by. There's also the P. T. Barnum of it all in that nobody knows what it is. Don't show them the shark or it's less scary."
Falchuk refused to reveal any further details about American Horror Story, saying: "We start in the writers' room soon, but you're not going to get anything out of me."
Stars including Frances Conroy, Dylan McDermott, Connie Britton, Taissa Farmiga, Evan Peters, Jessica Lange and Denis O'Hare have signed up to star in the pilot.