Start with choosing the fabric for the binding that you would like to see on the front of the quilt and then choose the binding fabric that you would like to have on the back of the quilt.
Now measure the perimeter of your quilt. Add 15" to the total. This is how long the completed binding strip needs to be.
Sew the 2" strips together by laying the ends of the strips over each other right sides together as shown above. Then sew a diagonal line, corner to corner. Cut away the outside corner 1/4" from the sewn line and press.
Now repeat this step for the 1" strips.
Sew the 1" and the 2" strips together as shown above.
Square up your quilt. Whenever a quilt is machine quilted, it has a tendency to shift close to the edge and sometimes the straight border edge that you started with moves a little bit. I always square up my quilts with a pencil or very fine fabric marker, measuring from the border seam over to the edge.
Sew the binding on using a 1/4" seam with the front binding face down on the quilt top as shown above. Align the raw edge of the binding against the pencil line.
Fold the binding straight down and continue sewing the 1/4" seam. Make sure you remove the pin before you start to sew ... you don't want it to get caught up in your machine.
Open the two ends and overlap them. Sew a diagonal line corner to corner. Cut away the outside corner 1/4" from the sewn line and press flat. Continue sewing the binding onto the quilt with a 1/4" seam.