Just my humble opinion, but I'd go with: C, 3,G,4,6,5,11, 12, 9, 16, B, F, 14,10,13,19, H, 18,20,21.
I, too, took my glasses off (very near-sighted) and just looked at the fuzzy colors. I tried to eliminate the yellows, blues and green-brown...although you may like them in there. Still concerned about #4, but the rusty red fit. You could create more depth by dropping #4 and using a black-on-black at the dark end. You have gorgeous fabric!