I love the idea of dragonflies or maybe butterflies randomly placed. That way, nothing has to match on the front. This is a neat fabric, if the size is right. Actually, you might could use the whole stamp.
http://www.ebay.com/itm/1-Yard-of-Wi...-/361036619307
Another beautiful piece
http://www.ebay.com/itm/Hoffman-Chal...r />
28857452 Although the second might overwhelm the faded quality of the original quilt fabric.
Edited to add: this might be good.
http://www.ebay.com/itm/Butterfly-Ef...item3aa5e9dede
Good luck with your project.