I tore fabric to use as a border and ended up ripping it off the quilt. When one side is sewed on-----the outer edge is too full due to stretching the fabric when you tear it. I was told by a lady with a long-arm who professionally quilts for other people that this was the way to get a straight grain. I have never torn fabric again. I don't even know if that border will ever be usable. I would request your fabric to be cut. It might be cut uneven but it will not distort the fabric.