That pic of yoyo quilt is my personal challenge....I have the clover yoyo makers(all sizes) and really like using them. Makes all the stitches equal and therefore all yoyo s look the same. First I cut the squares with my GO, then away I go....may finish this in several years! BTW, I too use hand quilting thread, single, to do, I don't knot at beginning, but at end of circle, I take both ends, after gathering, and tie into a surgeon's knot.....a square knot with an extra turn in on last knot.