I can try. Its really very simple. I figured the shed roof would be 6' on the high end and 4' on the low. framed two sides (uphill and downhill- the longer sides) with upright 2x4 on the corners and one in the middle. Drilled through the steel piping trailer sides (which was not easy) and installed lag bolts to tie the frames to the trailer. Then I just tied them together with a 2x4 on top running down to support the roof, and dropped a 2x4 to frame the door. I did frame at 24" which was WAY overkill. This thing went through the remnants of two hurricanes with no damage.The roof is 1x4 every 1' (so only 1/3 covered with lumber- just enough to screw in the roofing sheets). I put in hardware cloth on the gaps, not even a snake can get in there with the door closed- again probably overkill.
The metal sides of the trailer are the main strength of the coop. It came with them so I used them. I used an angle grinder to cut a spot for the big door (which we use a couple times a year to scoop out any built up poop). I put in some roosts on the long axis (2x3 again would be plenty) with 18' of roosts for 15 birds, and I put in a few crossers to keep them from being crowded on the roosts. Its important they have nice sturdy roosts because I move them after they have gone to bed and its a bumpy ride! Added a large wheel on the front so it's pushable.
There is nothing on the floor, just "diamond mesh" steel we call it. Trailer is 5x8 but I left the last 2' for storage, which was a mistake. Should have removed the heavy ramp and made it the full size. That would have been enough for 20 birds. They recommend 3 square feet per bird but that is for coops. These birds basically live outside and just roost in there.
For security if you have theft issues, I would consider making a little storage box (with a steep metal roof on the inside so it doesn't collect poop) with outside access and a jumper energizing your fence. Then you could have the solar panel on the coop roof, and the expensive stuff would be inside the fence. I have been entertained by how many "tough " people stay away from the fence because they dont understand it, and they wouldn't comprehend you just disconnect the jumper and climb over the fence.
Anyhow those are improvements for the next iteration. I kept the trailer street legal so if I decide to make the improvements I can sell this one and make enough to buy all the parts for Mark II. Total outlay on this was $700 trailer, $500 energizer/fence, hardware $100ish, $100 roofing, $30 front tire and some lumber. Auto door was I think around $200, and egg box was maybe $150. So its not cheap but those birds work constantly! they go on the "lawn" in the woods, everywhere. I've gotten one tick in 2 years since the birds were employed, prior 4-5 a day.
Also, I would get a 12v auto door so its all on the same battery.