I like to pop in on www.rateyourstory.com to see what they are up to and a recent post caught my eye. It is called Meter Maids Lay Down the Law of Rhyme. It's a great summary of what to consider when working in rhyme with examples from recent picture books. Even if you aren't a rhymer, the concepts translate to prose. Check it out: http://rateyourstory.blogspot.com/2012/08/meter-maids-lay-down-law-of-rhyme.html and then give them a shout. (Sorry. Couldn't help myself.)
This blog shares insights on the craft of writing children's books and the publishing industry, and supports creators on their journey.