No, this isn't a nap challenge. It's a Double Z Card. I liked the way my first one looked so much I decided to do a second with a different size Z. They go together quickly (well, except for finding papers that go together - thank goodness for paper packs!).
Here's a tutorial to get you started but you can certainly alter the size of the card and the width of the z insert. https://www.pinterest.com/pin/181269953731640025/
Hope you'll play!