Karen Gillan has “learned so much” about directing through her work with James Gunn. The 36-year-old actress starred in the filmmaker’s ‘Guardians of the Galaxy’ franchise as Nebula and explained that she is channelling his style in her own work behind the camera – which started with the 2018 picture ‘The Party’s Just Beginning’. Speaking to Collider, Karen said: “I’ve learned so much from him. He’s an extraordinary director. He’s actually such a natural leader. You feel like, ‘Okay, we’ve got someone leading this thing that really knows what they want and is incredibly decisive.’ “You just fe…