Alright, so I have another question. I figured I would just use this thread instead of starting another.
Anyway, I used the drywall tape backing just like in the build along. The thing is, it's ugly and surprisingly difficult to work with. For the next bow, I'm wondering about using canvas backing. You see I already have a bunch of un-used canvas drop cloths that aren't being used for anything and I could certainly get a long enough piece out of one of those. Any thoughts on canvas backing?