Cast on 104 join with a sl st to make a ring.
DC all the way round into the ring. End each row with a sl st and start the new row with ch 3 (counts as 1 dc)
You need a total of 45 rows in various colours.
I've increased the 45th row to make it a bit tighter around the neck, but that's up to you.
I've also added an extra rim with single crochets onto the first and last row and made a loop.