Hi there, I need help! I just purchased some embrodered sheer fabric and some raw silk to make curtains with. I thought of serging the edge of the sheers and possibly the raw silk with a rolled hem similar to what you see on napkins, using a wooly thread. The problem being is that I have not used my serger in a long time and I can’t find any info on how it should be set up to do this type of stitching. I think I am looper. Not sure which one is supposed to have the wooly thread….. am I on the right track or do you have any other suggestions for these fabrics.