Hi. Just last week I was stitching decorative stitches onto the rag quilt I'm making (I've not finished it yet) and I found out that if I used the walking foot, my stitches do not align properly e.g. the filled stitch star would not be a whole complete star but broken up and not aligned.
When I change my presser foot to the one recommended by the machine (when I choose a stitch, the LCD panel on my machine will show the presser foot to use), the stitches come out good.
I supposed in my case, I have to use the foot as dictated by my machine for the stitches.
I started with a walking foot because I thought it would help me feed the layers of flannel evenly