That's the way I've always done it. But when I was trying to teach my SIL on her first quilt. I told her to slip stitch the back of the binding. Didn't think to tell her it should be small slip stitches, so her stitches were an inch or more apart. We washed it, and she had to do it all over again. (just the slip stitches) I felt so bad. My stiches are 1/6 or so apart. I'm always afraid it'll come apart if it isn't that close.