If you mean machine satin stitches around applique, I start by pulling the bobbin thread to the top, then take a few straight backward stitches, cut the thread tails and then satin stitch forward to anchor them. When I reach a corner or outside curve, I stop with the needle down on the right, turn the fabric as needed and continue. If it's an inside turn the needle stops on the left. This avoids having a break in the line of stitches.