Playful Story Creation

I have a seed of an idea for a light-hearted, imaginative story and need a skilled writer to turn it into a polished manuscript. The exact audience age, genre flavour, and choice of characters are still open, so your creative input is very welcome... (Budget: $250 - $750 USD, Jobs: Book Writing, Content Writing, Copywriting, Creative Writing, Editing, Fiction, Ghostwriting, Proofreading)