I want to copy a child’s skirt from a catalog. It’s straight and below the knee, with three rows of bias ruffle at the edge. I will probably only put one row. The thing is I don’t know how to make bias ruffle–is that where you cut circles and sew them together to make a strip? If so then I might have to spring for a pattern, I’m not sure I can wing that. Or maybe I can–where do you put the grain line in relation to cutting the opening on the circle? And do you just end up with a jillion tiny seamlines on the ruffle from sewing those circles together? Or maybe you cut one giant circle. Help!