The 46-year-old, who is making her debut in Sanjay Leela Bhansali's Shirin Farhad, acknowledged that a lot was expected of her, reports the Hindustan Times.
The Om Shanti Om director announced: "I have always been in charge on the sets, and given instructions. Being on the other side will be a completely different experience.
"People expect a lot from me, and that's quite scary. I hope I can live up to their expectations."
The project is reported to be a love story between two members of the Parsi community. Dostana actor Boman Irani is reportedly playing opposite Khan in the production.
The mother of triplets added that, unlike other younger stars, she would not throw celebrity tantrums on set.
Khan revealed how she consulted filmmaker husband Shirish Kunder before signing for the project.