OK this is what I found to make your blocks wonky. I think the first link will be the most helpful. Scroll down the page where he is applying the washing strips.
http://www.quiltdad.com/2009/09/quil...block.html?m=1
Here is another link but I'm not sure it will be helpful.
http://piecemakers4life.wordpress.co...y-quilt-block/