For the back I used the dark green, with lighter green bobbin thread. For this first one I did the quilt sandwich. I try to follow teacher example and instructions on most of my first time stuff and then I can vary it after I have my basics down. If I was going to do another one, I would probably do the cracker. Then it would be easier to hide the thread. Now that I understand how to do this type of quilt, I am looking @ other designs to do. I really like this method, than doing the regular sewing method. Thanks for compliment. Enjoy the process and the finished quilt.