In Chapter One, it is just a normal day for Avatar Korra when she is suddenly attacked by some mysterious and powerful warriors. She attempted to fight back, but with their both agility and speed, she could not even see anything but their shadows. She was close to entering the Avatar State when she was knocked into an unusual position, she was unconcious, but conciously aware that she was.
Don't really have an opinion, since you didn't give me too much, but it sounds good. You're going to have to really polish it though, since it isn't very original, in order to attract readers on the Wikia.
I am 12 years old, and here is the first chapter completed:
Book One : A Strange New World
Chapter One: Strange Warriors
It was just an ordinary day in Republic City for Avatar Korra when she was suddenly attacked by two mysterious warriors. She tried to fight, but she could not even move herself with the speed of attacks the warriors were using. Even if she could defend herself, they were too agile and too fast for her to land a hit, and even when she was being attacked all she could catch in her sight was shadows. She was nearly at the point of entering the Avatar State, when she was knocked into a strange condition. She was unconcious, but she conciously knew that she was unconcious. She felt like when she woke up, her whole life was going to change. She was correct...
No offense, but the length of that chapter is going to get you nowhere. There is no official length, but it's extremely recommened that chapters are at least 3000 words average. Try providing some backrgound. Maybe Korra was out on a date with Mako, airbending training, etc. Try doing more details in your action.
Ex. "Korra barely dodged an attack, and fired a water strike at one of the warriors. In response, the warrior rolled underneath the attack, jumped up, and punch Korra's stomach. Korra doubled over, but adrenaline coursed through her. She wiped sweat of her face, breathed, and attempted to use the Avatar State when - BAM!"
Just keep note, you won't be able to publish chapters until your 13. If caught doing so, you can be banned. Heck, you have to be 13 to do ANYTHING on ANY Wikia, but your the founder, so I guess that goes out the window. But your not on Avatar Wikia, so keep in mind.