If you want to gain experience and credentials as a children's writer, my post "My Experience Entering the Market of Writing for Children," over at Finders and Keepers can help you. Every writer has a different journey, but I've shared some tips that I think will helpful to anyone. In fact, these steps apply to trying to get published in any type magazines, now that I think of it. Check it out, and say hi while you're there!
Hope you all have a very happy Wednesday!