Depending on the width of your strips, I would sew WOF sewing an even number of strips that will be approximately 18" wide. Then sub cut them into long strips. Press your seams towards the red. Keep one strip of each color to fill any gaps. I am doing a table runner with the same design 5 squares across and 20 squares down. Only suggestion I would make is to have all your setting triangles to be the same color. It will make things simpler. Good Luck !!