My Brick Work

As a retired masonry expert (yes, I really have the credentials—even the t-shirt) as far as I can tell from the photos:

Looks real to me.

Thanks for the encouragement. I am going to try darker mortars on the next structure.  

I used to do brick, and morter work in my time when I was going to school. I did general construction to pay the bills. This looks killer from the front. The side looks a little clean in places,but still very cool! Take some pictures of old buildings in your town, and use those as a guide. Weathering does a lot of weird things, but the corners of buildings, especially where there is no light to hit them directly are generally darker than the rest of the structures. You nailed that - you just need to make the weathering on the side a little more even on the end ( it just looks like a painter washed his roller out on it when the boss wasn't looking). Otherwise, this looks great!