Very nice quilt!!
I have one that I am working on with the same patterns. I am laying it out differently then the one you show. I will have the blocks that you have, but alternated with zigzag rows. I got my pattern from Quiltmaker magazine S/O '99. It was called Happy to be Scrappy. Same blocks, just different layout.
I will post a picture once I get it together. I have the squaring off of the blocks to do before stitching them together. It takes time and energy to square off the 144 that I need and lately (I guess with the weather turning nice) I have spent most of my time outdoors. By the time I get inside.........I am too tired to do anything!!!