The first place you come to a choice when knitting this is-what type of cast on for the center back panel? Either long tail cast on, a provisional cast on, or another cast on. With a provisional cast on, the lps are available for picking up once the sleeves are knitted and its time for the ribbing all the way around the center opening. Here is a video resource on how to do the crochet provisional cast on: http://youtu.be/Nnu1kk8dUj0 You'll want to work one row before starting with row 1 of the pattern.
Another place that neatness can be added is the edges of the side panel. I slipped the last stitch of each knit row-yarn in back, slip purlwise. On the purl row-yarn in front, slip purlwise. On the next row knit the first stitch in the back, or purl it in the front to create a neat chained edge.
The measurements for the various parts of the shrug are as follows:
Vine panel: 10" tall, 11" wide
Eyelet Rib: 7" long and 12" wide (The ribbing is slightly wider than the vine panel is tall, for fit.
Final Ribbings: 2.5"
I hope this clarifies and adds some interest to your knitting of this lovely shrug. It is a fabulously fun knit, great lace patterns that are easy to memorize create a stunning garment.