This week`s BAS seam starts with groups of three little straight stitches staggered evenly above and below the seam line.
After you have your straight stitches in place, lace a pretty thread up and down through them, leaving it slack enough that they curve nicely. Sorry about the picture quality - I was working on white with light colours and the photos turned out very faded. Anyway, I hope you have fun with this. I think the spaces between the loops of laced threads call out for more in there - can`t wait to see what everyone comes up with!