Hi Martina. Thank you for your thoughts. I know that's what everyone suggests but I have a multi-colored top, with both light and dark fabrics, and my backing is just an off-white muslin so I am using a light thread on the back and am varying the thread on top to match the fabric. When I'm using the darker thread on top is when I'm seeing it on the back. I have gotten it to look much better and am told that I probably won't get it perfect. I'm trying to overlook it and not obsess over it. Perfectionism is not always my friend!