Waluscha said that she was inspired to see Shah Rukh's dedication and focus towards his work.
"He's so calm and dedicated. When he is on the sets, it's just the film. Everything else takes a backseat," Waluscha said in a statement.
Waluscha had previously worked with Shah Rukh in a few advertisements but was nervous to shoot her first film shot with the actor.
"He just looked at me calmly as if to say, don't worry, I have all the time in the world. Fumble as many times as you want because that's the only way to learn," she added.
Fan, directed by Maneesh Sharma, is scheduled to release on April 15.(Also Read: Jabra Fan Shah Rukh Meets Sultan Salman Khan. 'Picture Perfect')