Your blocks are lovely!
I really like Barb's suggestion to have the first border be the same fabric you used as the background in the blocks - this will make it so the ornament blocks are not butting up right against the border, which appeals to me.
If it was my quilt, my first idea to try out would be that background fabric about the width of a red strip in the ornament, then a wide border strip of red, and then a binding of the dark fabric used in the lovely blocks with lots of squares. But this idea is only two border strips, not the three you want.
For three border strips, I'm a bit torn on whether to have the dark in the border or as the binding (like above). It could be nice to do light background, the dark green (in the dresden plate block), then the really dark and bind it in red.
I agree that putting trial strips next to your quilt and then taking a photo of it can be a big help. I think that really helps you see the quilt at a better distance, rather than the few feet of distance you have when you're working on. Playing around with a bunch of fabric can let you see how different ideas will play out, and you will probably be able to find something that makes your heart sing! Have fun with it.
