My sister and I currently have our own rooms. This year, she will go to college and we will share a room at home so my brothers don't have to share. I am 15 and she is 17. We are polar opposites, as I am a tomboy who plays electric guitar and video games, and she spends her time searching for pearls, make-up, and clothes at the mall and my parents are not letting me have any say in anything. They are already planning to take the bunk beds down, leaving virtually no floor space, and between my 3 guitars and video game chair, I will have no space. They will not even let me choose how the room will be laid out, but I am the one who will living in it alone most of the year. Any advice on how I could convince them to let me have a say in anything that is happening?