I like doing the backing as binding. To me it's really easier. I leave the batting sticking out around the edges a little wider than I want my binding to end up so it makes a kind of puffy edge. Trim so it is even. Then I fold over the backing so it is even all the way around just past the edge of the batting. This usually means it ends up pretty much like a double regular binding would be. Then you just stitch the binding to the front of the quilt by either hand or machine. Super simple! Oh at the corners it does help to do a diagonal cut to eliminate the bulk.