ERRATA for rows 1 & 3 per clarification from designer as follows:
When performing the Double Decrease tutorial, the 3 stitches mentioned in step 2 are not to be knit together as a k3tog and removed from the needle, but instead, those 3 stitches are just noted to be the sts that will be knit according to her explanation in steps 3 - 7.

Also, when you start the pattern repeat after row 4, (starting row 1 again) you do not move the markers, instead you just purl to mA, yo, slip mA, k1, yo, then purl to the next mA slipping mB as you go. Continue that way to the end. Just make sure that the 1st yo is before mA & the k1 & next yo is after mA. Proceed with rows 2-4 per pattern. Repeat these 4 rows once more.

The designer said she will make those corrections.

STITCH COUNTS
Since these are long rows & it’s easy to either forget a yo or drop some, following are the stitch counts to help keep track & catch a missing stitch quickly.

1st set of Rows 1-4: 16 mA (11 mB 11) mA 17 = 363 total each row
2nd set of Rows 1-4: 17 mA (12 mB 12) mA 18 = 395 total each row
3rd set of Rows 1-4: 18 mA ( 13 mB 13) mA 19 = 427 total each row
1st set of Rows 13-16: 19 mA (14 mB 14) mA 20 = 459 total each row. Continue in this format for the next 2 sets of Rows 13-16.

This is a nice, easy pattern & once you have completed the 1st 4 rows & see how the pattern works, it’s a good TV watching pattern. Just remember the YOs.