Valerie Bothell posts a seam treatment each day! For the month of April she is concentrating on the cretan stitch. I know I have done it before but I had to look up instructions for it as I didn't remember how to do it. http://embroidery.about.com/od/Embroidery-Stitches/ss/Cretan-Stitch.htm
I used my new Valdani cotton threads. I am adding the stitches to my April CQ block. Again, I am finding the patterned fabric a bit much but I will keep at it.