There is a type of hand sewing that you can try. I saw it on a tut but have been doing it for years. You insert your needle into the seam but do it so that the know doesn't show. Then run the needle a little ways under the fabric and come out with the needle and into the seam opposite. Run the needle a little ways and come out and into the seam opposite. Make the little ways very little. It's hard to explain, but if you go to missouri quilts and watch the tut for the Dresden Plate, she shows you how to do it towards the end when she is hand sewing the plate to the fabric.