I have made more progress on my sampler for the Personal Library of Stitches class...
Threads used are #3 perle cotton, silk and cotton floss, and Caron Impressions (cotton, I think). The top stitch is another variation on Guilloche stitch... I like the size and heft of the stitch done this way; however, I think you would have to be careful where you used it as it might overwhelm other, more delicate stitches. It would make a great border though!
I'm going to do some more couching, and probably another variation on the Portuguese stitch, as I like the Portuguese stitch and want to do some more experimenting with it. The next lesson should be out tomorrow!!