Design constraints were to use all three colors of the alpaca yarn, and there was a limit to the amount of each available. It was to be "warm" but not too warm, and was for a heavier, shorter woman (hmmmmm. Her measurements were very similar to mine!).
The buttonholes are a bit unconventional. I used I cord loops for the buttonholes - two on each side, just to hold the edges together. (The buttons supplied didn't work. They were very pretty and matched well, but were weak and broke with any stress. Soooo, the customer will add the buttons.)