Pretty much like Prism wrote. I iron the binding once it is sewn on the back of the quilt so it lays out flat away from the quilt. Then I turn the quilt over and iron the binding toward the front. With the ironing I can see that I do go over the sewing line from where I sewed the binding to the back.
I have used school glue to then keep the binding in place while I use a fancy stitch - usually what I call chicken feet - to sew the binding down on the front of the quilt.