I tried that curve master foot, and could never get the hang of it, so I now sew drunkard paths, and curves without pinning. I sew very slowly taking only 3 or 4 stitches at a time, using my 1/4" foot, I very carefully manuver both pieces of fabric in opposite directions. All this without pulling or stretching either piece. Must say it is a lot easier than pinning each piece, and 99% of the time they come out perfect.