Depending on the amount of quilting you have done in the center, if you are not adept to FMQ, then I would do a bead board look, that is do a line, then another 1/4" away to 1/2" away, and continue all the way down. Another one that adds variety but is not your standard 1" spaced lines is to do a line, then another the 1/4" space away, then 1" then 1/4", adds texture to the outside without having to do FMQ. Otherwise the hearts with loops between would be beautiful also. Another addition would be to do curved borders if you want to spruce up the soft border and make it look elegant. Quilt it first then cut the curves. Eleanor Burns has a great scalloped border ruler that would be wonderful.