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I ended up not using any pearls or sequins on it. I made a twisted cord from the burgundy thread to use to tie on the rings. It seems to hold the tie nicely but also pull apart easily so there won't be any unseemly struggles for the rings at the altar.
I backed it with burgundy velvet and for the little boy to hold it, I stitched a 3" wide band of velvet across the back. He can grab the band or he can just slip his hands in to hold it.
My part in the preparations for the big day is over, phew!