I just started piecing this last week. Ball point needle, increase stitch length, for sewing two pieces of minky together I was using a 2.5-3 stitch length. Also you need to baste it really well because of the stretchiness. I have only sewn mine together, haven't quilted it yet so I will be watching for answers, but i would imagine you would need to lower the pressure on the presser foot as well. I will be using my walking foot as mine is a strip quilt.