What fun fabrics! I have seen 2 rectangles sewn together in 2 different colours and then arranged to make a chevron pattern. I think someone did one on QB but said they had a little trouble with the bias edges along the sides of the top. I think I would sew on the straight grain borders before trimming the edge to reduce stretch. There is another pattern that has strips of triangles that are off-set to make chevrons. Hopefully someone can give you a link for a pattern.