Here's mine:
We have ours anchored and it is now 5 years old. We ran the wire all up in the ceiling joists and down on both sides anchored to t-posts buried very deep.
I love my coop, but there are things about it I should mention:
In our rainy moist winters, the ceiling has condensation on it. I run a 100 watt bulb in there when below freezing to give them a place to huddle under, and this also helps to dry it out.
I wish I had installed vinyl flooring on the wood, as the edges get WET on the inside from the rain, and it makes shavings wet. So I just dump sweet PDZ on the floor and scrape it daily (I treat the whole floor as a poop board). I hose it out once a year. The powder forms a coating on the floor and the poo gets rolled up in the powder as I scrape. I use no shavings except in the nest boxes.
It is really just a windbreak, as my coop isn't insulated. It definitely doesn't hold heat well. You need to cut lots of ventilation holes but ensure no draft (no air moving in the coop across the chickens). The doors get stuff in the tracks all the time which I have to scrape out. And that stuff in the tracks smells bad. So I pour bleach in there sometimes to clean it, and rinse.
So I wish for insulation and vinyl flooring. If you live where it gets very cold I would definitely insulate.