That is really pretty. I am working on oe that has 5" squares and 7" for the center. I am also putting an accent square in the center before I turn down the bias edge.

There are several of those 10 minute and 5 minute block videos on utube that require only one or two seams. You can also buy the books new on Ebay very cheap if you wait for a good deal.(less than $10.00)