Sorry to hear you are having so much trouble with the binding. I use a 2 and 1/2 inch piece when I am binding. It gives a little more fabric to work with and that helps me out especially if the quilt/batting is thick. Also, when doing the binding by machine, I use a zig zag stitch to finish. It hides a lot of mistakes and if it is a little uneven it does not show as much. Don't agonize over it too much. My philosophy is: If a man on a galloping horse can't see it, it is good enough. Enjoy what you are doing. Have fun. It does not have to be perfect. But, definitely try a wider strip for the binding. Good luck.