I used variegated thread. I will be reconsidering variegated thread that goes from light to dark as something is usually too much. I shall be on the lookout for medium blendables.The first lines were straight stitch thru the centres of the squares. I sewed all in one direction. I used a 3 step zig zag for the lines on each side of the initial straight lines but I stitched them all from the opposite direction to prevent distortion. I thought it worked well.
I did machine sew the bindings. I think I'll still hand sew the 'heirloom' quilts even if I manage to perfect the machine bindings.The little quiltlets were also used for wrapping and can be wee blankies or placemats.