First of all, your quilt is beautiful ! I love the colors and it looks so well made ! You don't mention the depth of the mattress it is going on, but a 68" x 89" quilt on a 54" x 75" mattress will have a 7" drop on each side. If that is enough for you, then I wouldn't add a border. If you add the other rows, and it becomes 76" x97, it will have an 11" drop on each side, if I have my figures right. I like a generous drop on a quilt, but either way, your quilt is gorgeous !