Masking! Find something creative from around your home to use as a mask for misting, inking or painting on your layout.
I used a knife to get the wave line splitting the page up. I couldn't fit it in the pizza box though so my desk is now mottled again :) The first of many engagment LOs!
It's amazing what you can find about the house to use for this challenge. Just have a look at The Studio blog to see what the design team found at home :)