This is much better than my first attempt. I didn't have this board then, or I would have improved much faster.
I finally figured out that my 1/4 inch was not always the same. It might have been off only a smidge, but that was enough for my blocks to be not all the same. I now have a quilting foot with a little flange on the side that measures exactly 1/4 inch. It changed my quilting life! :-)
You are doing a great job.