Genius mitered corner tutorial..........GOOD ONE.
Matching Perfect Points. This is a great tutorial on how to match up points on your quilt projects.
Mitred corner border technique This is so easy to do and gives your quilt and borders that wonderful finished effect.
Perfect mitered binding corner
Creativity U: How to Sew a Boxed Corner
Inspiring Creations: 4-Patch Slice Free Quilt Pattern and Tutorial.
easy-to-sew, professional-looking corners.
Good Tutorial on Squaring up Block
Grid Pop, Free Motion quilting tutorial