i want you to notice something very important about the placement of the second piece.
notice that it's placed "longways" up and down, and that i've only left a bit more than 1/4" of it "dangling" below the pattern
this is very important. you'll want to do the same thing will each of the rest of the pieces as you add them
notice, also, that the rest of the pieces are longer than the first by about an inch. that's so, as you work your way around the curve, the scrap will cover the pattern completely. there will be excess to trim away later.
today, we used 2" squares for the first piece, and 2" x 2.5" for all the others. if your finished wedding rings will be larger or smaller than our 13" rings, experiment with extra patterns and scraps until you figure out the best size for your particular size rings.