As a freelancer, writing children's stories can be a fun and rewarding experience. To start, it's important to research the target audience and understand what types of stories children enjoy. This could include tales of adventure, fantasy, friendship, or educational stories that teach important life lessons. Once you have an idea in mind, it's important to create a plot that is engaging and easy for children to follow. It's also important to use language that is appropriate for the age group you're writing for. Freelancers can find work by reaching out to publishers or by self-publishing their work. Building a portfolio of previous work can also help freelancers showcase their skills to potential clients.