I've attached the photo of the completed quilting backing. The nephew lives in Manhattan and the Hamptons, so is around the shore a lot, so I thought the ships and flags would be fun for him, and the reverse will give the quilt a longer life when the guy "outgrows" the I spy front.
I actually ordered this fabric (center panel, flags, and the border print), on line before I had assembled the front or knew the size, but luckily, for once in my life, I ordered "just enough" for the backing. I have one length about 14 " wide of the border print extra.
I'm still debating whether to quilt this myself or send it out; I'm pretty busy, so will probably send it to the long armer.