I'm loosely following the Dead Simple QAL. I decided to just do a medium wall hanging approximately 2 feet by 3 feet. I discussed my palate choice here.
I cut one 5 inch strip from each of my fabrics and cut 8 charm squares from each strip. Then I kept the layout simple. I had 10 fabrics and 8 squares of each fabric. My layout was 8 x 10 and I used each fabric once in each column and row.
Try it in black and white and see how it looks.