Copycat, I made it simple to me. I sewed 10 bricks into a horizontal row for a total of 25 rows. Then I paired them offsetting the brick row so when row #2 is put under row #1, there will be excess at the beginning of #2 and the end of #1. Then I trimmed the last brick on row #1 at the right end and then trimmed the first brick on row #2. Hope this helps.