Kaye Wood has a great video on Youtube that shows a wonderful way to sew binding by machine. I think Eleanor Burns has some too.
I have a Pfaff with the built in walking foot(IDT) and that is a big help to me, my binding always comes out looking nice when its all done.
I cut my binding strips from the straight grain rather than on the bias, I cut my strips 2 1/4"-2/12" wide . I sew the binding to the back first and then turn it over the front, then stitch it down with a straight stitch or a decorative stitch.