I happened upon the website of children's author Mette Ivie Harrison and it's chocked full of things for writers, and not necessarily just your generic stuff for newer writers that you've read a thousand times before! Check it out:
http://www.metteivieharrison.com.
If you click on the heading of Writing and scroll down, she offers her Free Thoughts on Writing, which I found especially interesting. Not only does she give tips on revision, dialogue, and writing romance (among other things), she also shares before-and-after excerpts from her manuscripts which include her editors' notes so you can see what she was asked to do and how she did it.
I'm still making my way through through her thoughts and advice, but I'm finding it so interesting I thought I'd share. It speaks to me--where I am as a writer--in a way that few other authors' websites have, and her honesty and insights are very refreshing!