For wall hangings, of whatever size, I prefer to do hanging loops like you see in the magazines on what they call tab top curtains. They can easily be added at any time, but it is desirable to stitch in the ditch along the edge of the binding all the way across the top for security sake in addition to stitching each loop another inch or so down all the way around.
Just read what I wrote and it needs more explanation, so PM me if you need it.