Kid Lit! Writing for Different Young Readers--Who Is Your Best Audience?

Many writers want to write for kids.  They raised their own children on books, maybe thought I can tell a good story, too!  Or they love to illustrate for kids and want to fashion a story around their illustration.  I get lots of questions about kid lit, what ages to gear a particular story to, how to sell your children's, middle-grade, or young adult b…