A good chain piecing session with good results missus the one I stuffed up and required some reverse stitching to fix but at least I spotted it before I sewed it into a block. Easier to fix as part of a sub block than a completed block. Too much reverse sewing would have had to be done if I missed it.
This is what the blocks look like when they are completed.
Yes they are large at 16 inches. It will make a decent size quilt once the sashing are added, even with only 12 blocks.