I can only echo what others have said, but I'll add a caution: don't fall into the trap of defining your work in opposition to another (in this case, Twilight). Don't make your heroine the opposite of Bella just because you don't like Bella. She needs to be her own person and your story needs to be yours, not the opposite of someone else's.

That's all I wanted to say. Maybe you've already thought of that, but yeah, just a word of caution. ;)