Back side
Make one more circle using only silvergrey. Do not fasten off on any rounds. Make the same rounds as your first circle, but on rounds 4, 8, 12 and 16 you make 1 dc in each st and not any ch4-spaces. No stitches are made in the back loops.
After round 19, make an extra round without any increases, 1 dc in each st. Then you make round 20 – 22. Fasten off and weave in all the ends.
Joining
Dark grey
Join circles by putting wrong sides together and dc through the back loops of both circles around. Make a hanger using red, ss in the dc in the middle of the 7 dark grey dc, ch 16, ss in the same st. Fasten off and weave in the ends.