The four-step sketch contains each of these important elements. You’ll start with twenty minutes to “boot up” by taking notes on the goals, opportunities, and inspiration you’ve collected around the room. Then you’ll have another twenty minutes to write down rough ideas. Next, it’s time to limber up and explore alternative ideas with a rapid sketching exercise called Crazy 8s. And finally, you’ll take thirty minutes or more to draw your solution sketch—a single well-formed concept with all the details worked out.
