British actor Daniel Radcliffe, star of the Harry Potter film series, said he wants to write a novel, The Daily Telegraph reported. \"I really want to write professionally in the future,\" the 22-year-old said. \"I try and write at the moment. I don\'t know if I\'m any good, as, normally, when I write I\'m so self critical that it\'s not long before I have to throw away what I write.\" Radcliffe said he has yet to inform J.K. Rowling, author of the Harry Potter series, who is currently working on her first book for adults, \"The Casual Vacany.\" \"Perhaps, I should get in touch with her for some help,\" Radcliffe said.