I cut my shirts to 14 1/2", so they're all uniform. Some logos take up all of the space, and some don't. Some are closer to the top of the square, than the bottom, but they're all centered. I've put various kinds of sashing in, depending on how large the client wants... usually a 2" sashing. My grand daughter didn't want sashing, and it was the hardest to figure out, as I cut out each logo and had to fit them together. I've had to do some piecing, but I, also, use the back of the tee shirt, and it's hardly noticeable at all. I quilt around the logos and do free motion quilting in the open spaces. The quilting also helps to detract from the piecing.