Is this a good start to my story? (It's called 'Charmers'.)?

it's good! I think the only thing you may consider changing is the paragraph explaining the "charm ceremony". Too much exposition, too early, often irritates readers. Instead of having one long paragraph, split the information up over several chapters, and try having someone else explain it to her instead of just writing it down. It's much more flowing and generally more enjoyable and natural that way. Also, beware of describing your character as being beautiful too early on-the traits are fine, but let someone else look at her and notice that she's beautiful, or it gets a little Sue-ish. Aside from that it's a good beginning to the kind of story you want to write. Good luck and hope I helped :)