The backing square was 4″ by 4″ so I took that as my starting point.
I ended up doing two versions of this, for the first my batting square was slightly smaller – about 2 &1/4″ square and for my second I cut my batting square a bit bigger to 2 & 3/4″ square.
I found some fabric scraps I liked the look of and even a couple crumbs that had puncture marks in them from a previous sewing project!
I placed my first two strips right sides together diagonally on my batting square and sewed through the strips, the batting and the backing all at once.
The final size of my design wall is 58″ wide by 36″ tall.