good old graph paper helps me figure out a lot of patterns.doesn't need to be to size, just count the # of blocks, etc. good luck. this is one of the fastest patterns that really looks good. if you use the different fabrics for the corner squares (when you fist start out), and keep the other 4 squares one consistent color, plus a consistent color for the middle square, you will have more pattern showing and your ending small squares will show well.
hope that is clear !