Great work overall! It's tough to design and build a structure as complex as a chicken coop.
Here are a couple thoughts:
The flat roofs over the coop and nesting box give me some heartburn. It looks like you are in Oklahoma, which probably limits your exposure to frequent/significant snow and rainfall events. However, even an intermittent storm could cause some trouble. Sloping roofs are important for two primary reasons: 1) Controlled movement of liquid water off of the surface and away from the structure; and 2) Controlled movement snow off of the surface to prevent structural damage or collapse. You may not run into any issues immediately (or ever) but a sloping roof line over the coop and nesting box should be future considerations.
Decide whether you're Team 2x2, Team 2x4, or Team Natural for the roost. There are all sorts of opinions on the best roost shape. My review of the research led me to Team 2x2. It looks like you are using a 2x4, which, if your flock doesn't have issues with it, may be just fine.
Replace the chicken wire with hardware cloth. Chicken wire is meant to keep chickens in, not to keep predators out. There are many predators who can chew or break through chicken wire and attack your flock. The most concerning area I see chicken wire is over the coop windows. I recommend changing that to hardware cloth as soon as possible to prevent any predators from entering the coop.
Finally, do you have latches on the smaller chicken door and nesting box? Some resourceful critters, such as raccoons, are fully capable of opening doors, lids, and even simple locks (e.g. hook and loop). You'll want to secure these entry points to prevent predation.