Finally chickens!
Songster
Don't feel bad! I think that's a very nice starter hen house. In addition to a diverter or closure on that long vent directly in line with the roosts, I would turn the roosts to the flat side. I wouldn't do any roof or wall cutting. Nothing major. I would add smaller fencing right over the top of your existing fencing.
That is going to be a fine house. Quit beating yourself up ...
That is going to be a fine house. Quit beating yourself up ...