Binding and the mitered corner used to be my nemesis. Finding a technique that you are comfortable with and practice is key. Re ently Patrick Lose was on Fons & Porter. He demonstrated the method that has one stopping 1/4" from the edge and then stitching to the corner. He cuts his binding strips to 2 1/4" . I am sure you can find some You Tubes on the method. My bindings have imroved since I adopted this method. Practice.
I don't get the Elmore's Glue use. Sorry. I can't imagine using it myself.
sandy