Rob
Hi Rob,
Not sure what's the right way to the the holes, but can tell you how I did it.
When I got to where I wanted to start the hole, I folded the raffia in on itself, and started stiching back the way I came. Then, when I reached the far side where I wanted the other end of the hole to be, I did the same thing (folded and stiched back where I came from, leaving the hole space open.
I kept doing that (back and forth, back and forth, leaving the hole space empty).
When I decided the hole would be big enough, I braided the raffia, and put it across the top of the hole, (like a bridge) attaching the open end of the braid to the far side.
At that point, I started stiching once again all the way around, using the braid as a bridge to keep the stiching going until the nest was finished.
Hope this makes sense and doesn't make you go

, lol.