Here is a comment from one of our viewers:
Made your rail fence with 4 strips but the pattern did not work out for 2 reasons. Firstly my dominant colour was second so didn’t make the zigzag pattern. Secondly I used 2 similar fabrics so they got lost.
It would be helpful to say the dominant colour(s) look best in first or fourth position.
I’ve undone the 9 squares and managed to replace a strip so my dominant colour is first and am now really happy with the block.