If this is your first time, may I suggest you baste the miter, then press and check that you are precisely right on the mark with a large square ruler that has a diagonal line thru the center. Then go ahead, and stitch the seam. When I was making competition quilts, I hated miter borders. It always seem that no matter HOW carefully I was, there was always one corner that would be slightly off. Glad that those days are behind me. Good Luck Remember: Measure twice, sew once !!
