Working with 2 strands.

Used 3 different colour markers ie green for beginning marker, orange for between shapeline sts and white for center panel.. otherwise is got myself confused and then it went smoothly. So far so good!!!

Ribbing = 10 rows
Yoke = Rows 11-44
Divide for sleeves = Row 45
continue with body = Row 46-74 to reach 10 inches.
Decreasing from row 75 this is how i understand what they are saying...

k2, k2tog k2, k2tog to last 3 sts, k3 in first section ie side panel reducing by 4 sts; then knit in pattern the centre panel, then over the next 2 side panels , i must decrease again by 7 sts ie. k2, k2tog k3, k2tog to last 3, k3; then knit in pattern across next centre panel and then in last side pane lknit 1, k2tog, k4, k2tog until last 3 sts, k3 ( decrease by 3 sts.)

Row 76-85 bottom ribbing
Row 86 bind off in rib…

Sleeves
Row 14, 22: decrease
Cuff from rows 32-39
Row 40 bind off