Some good answers here. Good jingles to remember are "Cut off the corner of the L" and "Don't sew into the crotch". Pilgrim and Linda R have an easy to understand method.
But I have always wondered why you need to lay the pieces so that they stick out beyond the L. I lay my pieces so that the edges are even. And I don't cut off my selvages! ! ! (Yikes!) If the selvages are just even with the edge of the second piece, they will be 99% gone after the seam is sewn and trimmed. (Well, maybe only 98%,) But that little corner of selvage won't hurt anyone, and just think of how many INCHES (maybe feet!) of your expensive fabric you would be saving on every binding you make.
Last edited by maviskw; 05-06-2013 at 05:42 AM.