Are you 13 or 14?
Your post says 13, but your public profile says 14. I'm afraid the discrepancy looks a little fishy.
But I will assume that you turned 14 last week and typed 13 out of habit (or something). First of all, never post your age on a public website. You have no idea who is reading your message, and you could attract attention from the wrong people.
Next, instead of asking other writers to send you their ideas (for your approval) you should simply look for a forum devoted to Tolkein, fantasy and teen writers (I think one was just created at sff.net) where you can talk about your love of the material and maybe rub elbows with pro writers, some of whom you might have already read and admired.
Simply put: "Email me at
[email protected] to show me some of your ideas I will email you back if I show any particular interest in your ideas." isn't how it's done. You should write the novel on your own and socialize with others doing the same thing. After you've met someone you have a rapport with (and your parents have vetted him or her to make sure they aren't a pedophile creep), then and only then should you consider a working partnership.
Writing partnerships are like marriage. They can last a long time and they can be a real headache if they don't work out. You also have to prove that you have something to bring to the relationship and I'm afraid you're only going to do that by sharing your completed manuscript with people you trust.
Good luck.
(Also sent by email)