A little over a week after a stunned Anna Paquin won the supporting actress Oscar for her performance in Jane Campion’s “The Piano,” the 11-year-old Kiwi has signed with the William Morris Agency for representation in all fields.Brian Gersh, head of the film talent division, will lead a team of agents steering the young performer’s career. Prior to this, Paquin had been represented by Gail Cowan, a New Zealand commercial agent. Cowan will continue to handle her commercial work Down Under. Not anxious? While it was rumored that the child star was not anxious to work regularly, that may not actually be the case. Her parents, both high school teachers, understandably wish their daughter to continue to have a normal childhood, but reportedly also feel it’s important for her to act when quality roles present themselves. Since signing with the agency earlier this week, Paquin has already received four film offers. “Anna is a gifted actress,” Gersh told Daily Variety, “and everyone here is excited about her unique qualities that will no doubt support a long career.” Paquin got the role of Holly Hunter’s precocious daughter in “The Piano” when she accompanied her older sister to an audition and caught the director’s eye.