If you need to close up a seam with an invisible stitch, then the ladder stitch is perfect. For sewing the lining closed in the bottom of your bag when you have turned it the right way out, or for closing the bottom of a pocket, or even for closing a plushie or softie when you’ve added the stuffing. The ladder stitch is perfect for all of these and more.
Check out the video tutorial which clearly shows you how to do the ladder stitch and sew your seams closed so the stitches are nearly invisible.
Full photo tutorial here