Imagine that on a long, lanky greyhound. We also added three inches to the neck because she'd like it to cover his ears. I added seam allowances but no hem allowances, instead binding with self-binding. I think it looks really nice.
I found 2 inch wide Velcro for the closures (just like on the original).
Since I had no idea how much elastic to use, I simply inserted 1/8 inch elastic into a casing and added a cordlock. She can adjust it and cut off any major excess.