I'm ready to bind my first quilt. (Yay, me... and FINALLY!) I'd like to use the backer fabric for the binding, but the only pieces I have are about a foot wide with the cross-grain and three or four feet long with the lengthwise grain. I'm not going to cut a hundred one-foot segments to get binding on the cross-grain, so my two options are either to go ahead and use the lengthwise grain or go buy more fabric. How important is it that the binding fabric be cut cross-grain?