As usual, I'm going to go on a little rant/rave, but hopefully it will help you out a little bit.
The best advice I can give you is to be yourself, don't worry about what other people think, if she likes you because you're acting like someone you're not, eventually she's going to find out who you really are. I don't like to tell people anything about anything that has anything to do with me... ever. It's just the kind of person I am. If you feel confident enough to tell someone about who you like, then I say do it. It always feels good to get things off your chest. I also happen to be a terrible procrastinator. ^.^ I put things off until the last minute... then put them off some more. The sooner you do something about it (eg. Tell her.) the more likely she is to say yes... now, I'm not saying to run up to her and start pronouncing your feelings to whole world, but if you think you have a good opportunity, don't pass it up, you may never have it again.
I don't know about you, but I always seem to find a way to over think. I come up with crazy situations that would probably never happen, then when something does happen, it's unexpected, and you become worried that you don't know what to do, because you didn't think about the situation beforehand. Also, a good thing to keep in mind, is that no matter how much you may like her, it probably isn't going to change the way she feels about you. Don't get too tangled up in your own mind, it will only make you feel worse if she doesn't like you. I'm not one to discriminate about age, just do what you feel is right, whenever/whatever that may be.
The last thing I want to tell you is 'Just do it'. It makes everything easier, and a lot less stressful.
I'm only telling you what I know from [experience (lols, I need to think of a better word)]. Like I said, I don't let anyone know anything, unless I absolutely have to. This isn't something someone told me, just my thoughts on the matter.
I've only told a girl that I like her once (not to say that I haven't thought about other people, just never felt that strongly
), and I was too late.
All the things I just wrote, I did pretty much the exact opposite, and now she's gone. Hehehe.
You may want to completely overlook my reply, and listen to the older, more experienced people.
I am only 14. :rolleyes
Float On.