Here's a link to the QB Gallery with some pics of completed quilts of this type ...
http://www.quiltingboard.com/members...bums17318.html
As a point of clarification .. you mentioned 4 yards of fabric ...
For this type it's actually a Jelly Roll of 2-1/2" strips (40 pieces).
Or as mentioned above, you can cut your own strips ... one WOF strip per piece of fabric.