1st I cut 2.25" binding ~ miter all your seams including connecting the section together
2nd Make sure you flip up and fold down that it is absolutely perfect.
3rd I leave just the width of a pin excess of the fold down on the top edge of the quilt.
4th Make sure your quilt is SQUARE at the corner. NO wonky borders.
5th Make sure you leave enough of your quilt edges to make the binding full and not sagging
6th Sorry to say this, but HAND stitch your binding to the back. it looks much more professional.
GOOD LUCK. Hope I didn't forget anything. After 2 decades, it becomes automatic !!!