I always aim to hide my stitches in the "ditch." One lady at my LQS told me she does a serpentine stitch which is unique and as she told me, then if you goof it isn't as apparent. I haven't tried it, but I am thinking of trying it on a quilted postcard to see how it looks. SID is my favorite although the more I practice FMQ the more I like it and am starting to feel a little more confident.