Here's a free pattern:
https://www.allpeoplequilt.com/quilt...nd-blue-bricks The bricks are going vertically instead of horizontally, but you can make it either way with the same instructions, just change the layout. It's a pretty big quilt, too.
I've been making a lot of memory quilts lately. I've found that the poly/cotton shirts get very thin. So it's a good idea to put a stabilizer on the back. I like Pelon Shape Flex Light.