When I do binding, I leave about a 6" tail when I begin, handle the corners just like on this video - starting my seam about 1/2 way down one side. As I come around to the last side, I stop sewing and back stitch about 8inches from where the first seam started. I then lay my binding on top of the staring piece, and overlap the exact width of the binding (e.g. 2.5" strip, I overlap 2.5").. I then cut the excess off, and using the mitered joining method (lay left piece horizontal, right side piece vertical - right fabric sides together, and stitch from upper left corner to lower right. Then you hold that side up, pulling away slightly from the seam, and you will find that your binding fits EXACTLY, with no additional bulk from having to tuck one end inside the other. Trim the seam allowance to 1/4 inch, and then finish sewing your binding down. It is really easy, and works every time, with every size binding strip.