Then I cut lots of pink scraps into strips. The idea is that you lay a strip along the diagonal line, and then sew another one on top, flip and continue until you have covered the Vilene.
I have made a few blocks so that people can see what they are aiming for. I did them on the machine, rather than by hand, but it'll be the same.
I'll let you know whether it is a success or not in a couple of weeks.