How can i make myself appear more like a 15 year old girl, then a 10 year old girl?

Hun, I get this way sometimes. It's normal to feel insecure sometimes. But you know what? Your beautfiul and screw the guys. They're bad news all they want is to get inside your pants. And most of those guys hitting on your cousin arent the guys for you. You will find someone who doesnt care how flat you are. and its not about image its about personality. Work up the courage to talk to a guy like your cousin is. It's okay though if you dont find a guy in highschool because those guys are only after one thing. You usually find your soul mate in college or after. so be patient because it will all be worth it when you find that one guy who loves you for you :) there are plenty of guys out there for you but dont be too focused on finding the one in highschool cause most of those relationships dont last after highschool. <3