It really ALL and I repeat ALL depends on what type of guy she likes. And even though I know you really like her, remember that this is not "super serious love' that results in marriage, " so don't be obsessed with this girl. However, I know how important it feels for young people who are in love (yes, I'm young too, but anyway...: P), so I’ll give some tips.
1. Do not and I am saying "DO NOT TALK TO HER ABOUT STAR WARS," or even Pokemon for that matter if you don't know whether she's interested in that kind of stuff.
You can find out if she is by asking her in a somewhat less crowded place where her best friends of clique group are not around. Don't ask this question immediately, first, you must build a casual conversation starting with either a "Hi, how are you" or "today's pretty cool, huh?" It doesn't necessarily need to be started with those two sentences but at least nothing that involves the things she dislikes or simply isn't interested in.
2. DO NOT COMPLIMENT her OUTFITS. V_V
Ok, so the reason why I say so is because even though girls are ten, most of the time they act like 15 and by that they know many things about boys being girly and will immediately judge them as "well...'gei'"
It's true! So if you wanna compliment on something, it better not be her dress or skirt. But you can say, "Cool outfit." Again, do this with the proper conversation start.
3. Make yourself popular. Join a cool club that involves clean yet social events such as, sports, music, and etc. No, you may not join the galatics.
4. Primp up and shape up. Girls (that are pretty) mostly like cute, well-shaped, and handsome guys that are not too skinny and not too plump (although some girls rarely like robust guys, it's like what I said...rarely). By doing number 3, you will get a good figure if you join a sport club, depending on what kind of sport you prefer.
5. Be more social. The more people you are linked to, the more chance you have to talk to Kalaya.
I don't know much about young relationships, but I know as much as wanting these types of guys and how I want them to treat me.
After you have done all the above, slowly start becoming closer friends ad finally ask whether she might like hanging out some time, this way, she will get to know you better and might start liking you. Make her fall.