1st
step:
The blue zone and the orange-pink zone are on the same
level. You weave in the first warp thread of the blue area with orange-pink thread and weave your half-pass.

2nd step:
On your orange-pink half-pass, position yourself on the usual warp thread for this zone.
3rd step:
With your blue yarn, pick up the border warp yarn. The previous orange-pink half-pass helps prevent the border warp thread from becoming too thick.
