After you have prepared the t-shirt squares, you’ll need to cut inner border strips and small squares. I used turquoise fabric to make 2.5 x 2.5 small squares.
First, cut strips of fabric that are 2.5 in. wide. Then, trim the strips to be 2.5 x 2.5 inch squares.
The above picture shows the small squares.
After you have cut out your small squares, you will need to cut out your inner border strips. I used a black fabric for these. First, cut strips of fabric that are 2.5 inches wide. Then, cut the strips 12.5 inches long. The 12.5 x 12.5 square ruler really comes in handy for this.
The black strips are 12.5 inches long in order to be as long as each side of the 12.5 x 12.5 inch t-shirt squares. I chose 2.5 inches for the width, although you could increase or decrease it. Since the black strips are 2.5 inches wide, the small squares need to be 2.5 x 2.5 inches square.
The above picture shows the 12.5 x 2.5 inch strips of black fabric that will be used for the inner borders of the quilt.