Styling trick to try: layering long skirts under knee length skirts and dresses

I saw this styling in the December issue of Glamour and couldn't stop thinking about playing with all of the items I have in my closet.  The thing to remember is to layer with flowy long pieces and the top portion should be a-line like a pencil skirt.  This is perfect for people like me that don't like the really short lengths offered at stores like Target and Forever.  Play with layering different prints, textures and lengths on the bottom piece to keep it interesting.  Here are a few layering ideas: