I agree with quiltnNan, alternate them, or if you only have a couple satin stitched just lay them out with the blanket stitched ones and arrange them in a pleasing manner- it will be fine. I do Tons of machine appliqué and use blanket stitch 99% of the time. I did once inherit some unfinished blocks that had 3 satin stitched. I placed them in the center in a group surrounded by the others I sewed with the blanket stitch. The quilt came out Very cute! It was a santa quilt.