No matter how wide I want my binding, I stitch ¼" from the edge of the quilt top and stop that far from the corner of the raw fabric edge (not the corner of the batting) for the miters. The difference is I leave more batting/backing for the wider bindings so it's always full and even on both front and back.
If you stitch further into the quilt top than ¼" you lose points and other design details. I measure from the binding stitching line after it's sewn on the front and do the final batting trim to accomodate the binding width I want for that particular quilt. It works perfectly every time and guarantees full, even bindings.
Last edited by ghostrider; 05-18-2014 at 10:57 AM.