My technique has been the same for ages - I cut my binding strips 2.25" and I join my strips with a diagonal seam. I square off my quilt to leave a slight amount of batting along all the edges. The batting excess then gets folded into the binding, making it firm & full and more durable.
I always machine attach my binding to the front and then hand stitch down my binding on the back with a mitred corners. I use a blind stitch where my needle travels through the backing fabric and picks up a bit of the binding fabric.