I have wanted to make a blue jean quilt myself and saw a tutorial on one with circles. I liked it and added to my favorites so when I had the time I could make it. Here is the link
http://www.equilters.com/library/jea...gallbaros.html
Hope you like it too. And if you want to use stretchy jeans I would suggest putting a fusible interface on the back of it to stabilize the fabric, like you do on t-shirt quilts.
Hope this helps