My book...I need help.

Ok, so a few weeks ago I started writting a book, I have not named it yet, but I for one think it is very good. My book is about these two sisters; they are twins. It is their senior year at New Valley High School, and their mother is California's biggest lawyer. She is flown all over the nation to take on big clients, so she is gone very frequently. Mandy is the beautiful twin, she is tall with a light caramel color to her hair, and her eyes are blue. Everything Mandy wants is handed to her on a silver platter, every guy in the school wants her, and she is on the swim team. Being beautiful just comes natural to her. Jenny, on the other hand, is plain(or so she thinks). She is tall and skinny, her hair is strawberry blonde, and her eyes are green. Jenny runs track to stay in shape, and later in the story we find out that she is a witch. In her father's side of the family, magic was common. The girls Mom left their father as soon as she found out, because she did not want the girls to be a part of that. So Jenny is terrified, and thinks she is going crazy when "weird" things start to happen. There is a new guy at their school by the name of Brad. Brad is abnormally handsome. He is tall, olive complected, and very muscular. His hair is a light shade of brown, almost even blonde, and he had hazel-colored eyes. Jenny is swept off her feet by this guy. She doesn't know what it is about him, but she is addicted to him. Maybe it was because he was so different than any of the other guys, or maybe it was because someone other than Brock was paying attention to her. I left off in the story that Mandy, Jenny, and Abby (their best friend for years) were at the beach. Mandy of course was sun bathing and Jenny was surfing. Abby sort of bounced back and fourth between the two. As soon as Abby left Jenny to go lay out with Mandy, Jenny started to day dream about Brad. In her trance she drifted out far, and a wave crashed on top of her. She nearly drowned because the strap from her surf board got stuck on some rocks. Mandy saved her, and the next thing she knew, she was waking up in the hospital 3 days later. She had a concussion because she hit her head on the rocks. Also, in her travel through the coral, she cut her leg open and broke one of her ribs. When she got home, she went to get into the bath, and finally noticed all of her wounds. Her eyes were black, and almost swollen shut, and most of her body was black and blue. At this point, it finally hit her; she broke down and cried. Mandy came into the room to ask what was the matter, and she told her. She confessed that she longed just for one day to be beautiful, and to have many people want her................................Now, i need help. I have hit a writter's block and I can't seem to get myself out of it. Help me. =[ Thanks.