You can usually do it by visiting their official website and looking for the 'Submit Story' or 'Contributor' section. There, you'll find instructions on how to proceed.
I'm afraid I can't tell you the author of 'the last green valley novel'. It could be a relatively unknown author or a new release that hasn't gained wide - spread recognition yet. You may need to do some research, like checking with literary agents or book clubs that focus on new or niche literature.
I'm not sure specifically as I haven't read it in detail. But generally, it might be about a valley that has some sort of unique significance, perhaps related to nature, the environment, or the people living there.
Well, it could be that at North Valley High School, there's a student who, similar to Cinderella, is treated poorly by some. But then through her own kindness, determination, or some unexpected turn of events, she gets an amazing opportunity. Maybe she gets a chance to shine in a school play or a sports event, just like Cinderella gets her moment at the ball.