We started by getting the platform on six supports (we later added two additional supports) and validated the stability of the platform. We then started crafting the additional structure.
Once we had the structure completed, we added the stairs (last so the goats would not join us during construction). We ended up redesigning the stairs twice after the initial build due to the sheep, who kept finding ways to knocking them over.
After the structure was complete, we weather proofed it using an eco friendly/animal safe protectant. Now we need to bury the tires and place the wine barrels. And yes, the goats are loving it.