Diamonds of Eos Chart Five-Sides - written instructions:
(corrections added in bold)

Row 1 (RS): Sl1, K3, SKP, K5, K2tog, YO, K1, YO, SKP, K2, (K3, K2tog, YO, K1, YO, SKP, K2), K3, K2tog, YO, K1, YO, SKP, K5, (CS), K5, K2tog, YO, K1, YO, SKP, K3, (K2, K2tog, YO, K1, YO, SKP, K3), K2, K2tog, YO, K1, YO, SKP, K5, K2tog, K3, Sl1.

Row 3: Sl1, K3, SKP, K3, K2tog, YO, K1, Nupp, K1, YO, SKP, K1, (K2, K2tog, YO, K1, Nupp, K1, YO, SKP, K1), K2, K2tog, YO, K1, Nupp, K1, YO, SKP, K3, (CS), K3, K2tog, YO, K1, Nupp, K1, YO, SKP, K2, (K1, K2tog, YO, K1, Nupp, K1, YO, SKP, K2), K1, K2tog, YO, K1, Nupp, K1, YO, SKP, K3, K2tog, K3, Sl1.

Row 5: Sl1, K3, SKP, K1, K2tog, YO, K1, Nupp, K1, Nupp, K1, YO, SKP, (K1, K2tog, YO, K1, Nupp, K1, Nupp, K1, YO, SKP), K1, K2tog, YO, K1, Nupp, K1, Nupp, K1, YO, SKP, K1, (CS), K1, K2tog, YO, K1, Nupp, K1, Nupp, K1, YO, SKP, K1, (K2tog, YO, K1, Nupp, K1, Nupp, K1, YO, SKP, K1), K2tog, YO, K1, Nupp, K1, Nupp, K1, YO, SKP, K1, K2tog, K3, Sl1.

Row 7: Sl1, K3, SKP, K1, YO, SKP, K1, Nupp, K1, K2tog, YO, K1, (K2, YO, SKP, K1, Nupp, K1, K2tog, YO, K1), K2, YO, SKP, K1, Nupp, K1, K2tog, YO, K1, (CS), K1, YO, SKP, K1, Nupp, K1, K2tog, YO, K2, (K1, YO, SKP, K1, Nupp, K1, K2tog, YO, K2), K1, YO, SKP, K1,, Nupp, K1, K2tog, YO, K1, K2tog, K3, Sl1.

Row 9: Sl1, K3, SKP, K1, YO, SKP, K1, K2tog, YO, K2, (K3, YO, SKP, K1, K2tog, YO, K2), K3, YO, SKP, K1, K2tog, YO, K1, (CS), K1, YO, SKP, K1, K2tog, YO, K3, (K2, YO, SKP, K1, K2tog, YO,K3), K2, YO, SKP, K1, K2tog, YO, K1, K2tog, K3, Sl1.

Row 11: Sl1, K3, SKP, K1, YO, Sk2p, YO, K1, K2tog, YO, (K1, YO, SKP, K1, YO, Sk2p, YO, K1, K2tog, YO), K1, YO, SKP, K1, YO, Sk2p, YO, K1, (CS), K1, YO, Sk2p, YO, K1, K2tog, YO, K1, (YO, SKP, K1, YO, Sk2p, YO, K1, K2tog, YO), K1, YO, SKP, K1, YO, Sk2p, YO, K1, K2tog, K3, Sl1.

Errata added 11/12/2019:

DIRECTIONS

Work Chart Five: Sides and Chart Five: Center Spine section
Work Side Chart Rows 1-12 once, then Rows 3-12 13 times.
Repeat Center Spine Rows 1-32 four times, then rows 1-14 once.

CHARTS

Chart Three: Row 11, Stitches 75, 76 = K2tog, YO

Chart Three: Row 27, Stitch 55 = Knit

Chart Six: Rows 23 and 25, Stitch 36 = Sl1, K2tog, PSSO

Chart Six: All RS rows through Row 23, Stitch 43 = Sl1, K1, PSSO

Chart Six: all Centered Double Decrease symbols (a straight, symmetrical upside-down V with a straight, centered vertical line) = Sl1, K2tog, PSSO