It took me most of the evening to hook one sheep (this isn't going to be a quick-finish project), but I'm really pleased with the handspun yarn loops. Of course, since it's handspun (and my handspun at that), the yarn width isn't uniform- some of the yarns are heavier (in places) and some are thinner. And some of the more uniform yarns are too thin, so they had to be doubled or tripled. Though I'm not having too hard a time with it, all of my handspun yarns are 2-ply, which is a bit trickier when it comes to hooking (getting both plies in the hook).
My loop height isn't completely uniform, but it's not too bad. This is a perfect use for handspun yarns. I can never bring myself to throw any out, so I have tons of little balls, and bits and pieces of leftovers in lots of colors, so I shouldn't have a hard time coming up with different greens for the hills, bright colors for the flowers, and several blues for the sky. And should the worst happen, I can always make more...
Since the loops are formed with non-uniform yarn, the fact that they aren't lined up regimentally isn't as obvious, or critical. I don't know if I will need/want to coat the back with some sort of glue for reinforcement or not, since this piece will get a lot of wear- this project is intended to be functional, not just decorative.
I am also not sure how it'll go when it comes time to change the hoop position. The hoop itself has a very long screw (it's a quilting hoop), so it can accommodate thick fabric, but the rings may pull the loops out of place. The Hub may have to build me a larger frame for the piece but I'll cross that bridge when I hook to it.