For me, a design wall is so important to my process. My new studio has two 4x8 sheets of foam insul-board covered and it's great for putting pieces up, but stepping back is also important. What I mean by stepping back is being able to move back from your design wall, to see value, shapes, and layout. In my studio, if I scrunch myself back in the corner I can only get about 5 feet away and today I learned that it's not enough.
Have a great week!