Determine what pattern you want, and use painters tape to create it.I used measuring tape to keep my lines equal distance, but you can also do random lines or shapes!
Step 2: Paint the wall
Use a roller or paint brush (or both) to paint over the entire wall.I used Studio Color paint in Stellar (premixed paint at Walmart) for a bold contrast.
Step 3: Dry/Recoat
Let the paint dry 1-2 hours. Add a second coat if necessary.(Check paint can for drying/repaint times.)
Step 4: Remove the tape
Slowly peel the tape off, careful not to pull up any new paint!