The Wee Willie Winkie

Currently I am working on some pieces for the next Beasts & Beats Art Show. The theme this time is Nursery Rhymes. I've chosen Wee Willie Winkie. He's a Sandman type character that helps put restless kids to sleep. I envision him as a little scotsman sprite. Here i am trying to develop his look as well as those of the kids before I get started: