I got one front piece corded, the longer peices were a bit of a struggle! Where all else failed, I poked holes in the coutil and pulled the cord to the outside, then started again through the same hole. This worked reasonably well, but you have to be careful not to get and kinks or twists in the cord or it won't go back through.
There seems to be a bit of uneven-ness between the cording and the seams, where the cording has shrunk some sections (I hope - otherwise its because I stitched uneven seams). I'm hoping that once I add the bust and hip gores the tension will be released.
I added a sleeve, unfortunately I cut the armband way too small so I couldn't actually get it on! I will fix this, and may need to make the armholes a little wider too since it had all that extra fabric gathered in!
Anyway, with the sleeve inI can drape the pattern for the petal like sections which go over the sleeves in the original.