Hello again ,
Triangular shape cord is simple and create a 3d effect when is used to contour shapes.
Less used for flowers, this cord look good on the edges for smal, delicate doilies.
-chain 3 loose
-2 sc in front thread of first ch
-1 sc in second thread of ch1
-1 sc in two front threads
Now you can start to see the triangular shape. All 3 sides of the cord are visible and will start to twist a little bit. Do not worry, when basted, will look good and to do the filling you will insert the needle in left or right side. In that way the top of triangle remains always up an create a nice profile to your work.
Repeat till necessary length achieved. Because is not very clear in photos I did a sketch.