illinois

I have inherited a beautiful Grandmother's Flower Garden flimsy. It is totally made by hand and a work of time and talent. I would love to finish it but I'm not into the idea of binding all those hexies when the time comes. What I'd like to do is find a good way to straighten out that edge and put a border or 2 on it and let it be. Has anyone done this and at what point do I begin evening that out to a straight line? I do not have any fabric used for the flimsy. What is between the flowers is white but the piece is old enough that bringing in another white will probably be noticeable.
I've entertained the idea of creating a simple scalloped edge instead of adding borders but that didn't excite me a whole lot either.
I could use some suggestions from someone who might have done this, please.