Ally made a Prezi on Earthship Construction. It’s a bit thin but it gives a general guideline on process. Land > Design > Permits > Build
Of course, I’ve over simplified this but the Land and Design are the most crucial IMHO. The Land will dictate the Design and ultimately the viability of the project.
Permits can be a hassle BUT if your design professional works with the local municipality early on, acquiring Permits will be a non-hassle. Building just requires labor and recycled materials.