In my opinion, and that is all it is: By stitching the whole thing, you will have a frame that looks old, as well as the back ground. I don't know if picking a different color material, so you don't have to stitch all of it, will give it such a pretty effect. I like the old framing look. But with any thing you do, it is yours to do what you will. Cross stitching is an art. You are the artist.
Adele