Banner's quilt top just before I sewed the strips together. I have learned so much on each quilt that I have completed. I finally got the triangles on the sides and top to be even on this quilt.
This quilt called for mitered borders, so I thought I would give it another try and see if turned out better than the last time. First, sew all of your border strips together. I had four for this quilt. You will need extra length when you miter the borders.
Mark the center of the border strips.
Mark the center of the quilt top, bottom or side.
Stitch the quilt and the border together leaving 1/4 inch on each side. Back stitch a couple of times to make sure each end is secure.
Fold the body of the quilt in half on the diagonal with right sides together. Lay the borders flat like shown in the picture, raw edges even.
Place a pin to mark where the stitching stops and then use your ruler to mark a 45 degree angle to the edge of the border. Line up the ruler with the quilt center folded diagonally and the pin.
Pin the fabric on the line, especially at each seam of the separate border fabrics.
Sew on the line.
After sewing, open up to see if all the borders line up. If they don't, unpick the seam and try again.
After the corner looks the way you want it, you are ready to cut off the extra fabric.Use your ruler and rotary cuter and cut 1/4 inch from the seam.
Press seams flat.
It looks quite nice. I think this is an easy method, at least it was for me. 
The finished quilt top. As soon as I choose the back for this it will be ready to quilt.
