I used my carpentry skills to convert an old garden store type thing into a chicken coop. And then put it on top of a fruit cage so its about 2 mtrs of the ground with a single roofing batten ladder leading up to it. Only foxes with excellent climbing skills need apply. Not the most attractive thing i,ve ever made but practical. I did say i don,t really bother looking at coops/plans but looking at the coop page here i saw the "hoop coop" design. Im going to make one soon as poss. My second wind turbine is almost complete so id better finish that first.
Do you draw plans manually. I do i bought a drawing board from the technical college when i was doing a course there. Great for actually working out how things are going to work etc.