After I got home from work yesterday, I cranked up the air conditioning and finally hung the upper layer of my gallery wall!
Everything was eyeballed and I am quite pleased with the results! There are a few spots I'm considering changing (and if you look closely, I'm sure you'll see them!) but that comes with time. Believe it or not, one of the things I really love about this wall is that it can be a continuous project!
Here's a quick look back prior to the new addition...
I think the additional layer fills in the room quite nicely! Now if I could just so something about that couch :-)