I want to work for vogue :)?

Hi there. Im 13 years old and my dream ambition is to work for Vogue Magazine in London. I Live in Scotland and i really want to move down to London when im finished Highschool and university. I love fashion and writing and would love to be a journalist because it what i dream of doing. the only thing is i dont quite know how to get into it. I know its highly competitive and you have to work your way up but i really would love to acomplish that! Im chosing my coursechoices at the moment and have related the subjects to journalism and fashion but i really need more information in how to get into this buisness :)? if anyone has past experiences, qualifications or any Imformation that would be really helpful. Thanks <3