The start was abit wonky and the spiral does not show, must have something to do with the knitting being rows. Something to refine.
This is taken straight from my notes, might have mistakes, but just to give you an idea on how I did it.
Use 3.25mm to work with purple.
Use 4.5mm to work with orange.
(1) Cast on 6 sts on circular needle, or DPNs with purple.
(2) Purl 1 row.
Switch to orange.
(3) *Dbl yo, K2tog* repeat to end of row.
(4) Knit 1 row
Purple:
(5) K2 in each stitch.
(6) Purl
Orange:
(7) *Dbl yo, K2tog, Dbl yo, K1* to end of row.
(8) Knit 1 row
Purple:
(9) K2 in each stitch.
(10) Purl
Orange:
(11) *Dbl yo, K2tog*, to end of row.
(12) Knit
Purple:
(13) Knit
(14) Purl.
Orange:
(15) *Dbl yo, k2tog*, to end of row.
(16) Knit
Purple:
(17) *K3, K2 in one stitch*, repeat to end of row.
(18) Purl.
Orange:
(19) *Dbl yo, K2tog*, to end of row.
(20) Knit.
Purple:
(21) *K3, K2 in one stitch*, repeat to end of row.
(22) Knit.
Orange:
(23) *Dbl yo, K2tog*, repeat to end of row.
(24) Knit
Purple:
(25) Knit
(26) Purl
Work rows (23, 24, 25 26) 7 more times.
Purple:
(54) Knit
(55) Purl
Orange:
(56) Knit
(57) Purl
Purple:
(58) Knit
(59) purl
Loosely bind of.