Orb28 is related to New Moon magazine, which is for and by teenage girls. They are looking for content from girls between 12 and 18 years old. They "especially encourage submissions from 13 to 15 year old girls. [ . . . ] Send in your stories, poetry, articles, travel logs, biographies, videos, songs, podcasts, drawings, paintings, photographs, games, cartoons, reviews - and whatever else you think would fit on our web space! Work on any topic pertinent to teen girls is invited . . . the sky's the limit!" Here is the submission form.
Learn more about Orb28's mission at the website and blog. Also visit New Moon.