Thank you very much for these two wu of the old classes about perspective. I had a lot of fun learning. As a moriv for this class, I decided on the town hall in Breisach am Rhein, Germany. This is where I completed my vocational training. The town hall stands on top of a mountain and I had to climb up every day, so you were really nice and fit. 

First of all, my fineline sketch. The windows really gave me a huge challenge, but once I understood, the picture painted itself. I think I still have a lot to learn, but it's definitely not perfect. For my taste, the picture is also "too technical", it lacks my own style. 

And here is the finished picture, painted with watercolors. I tried my hand at your clouds, I really like them. All in all, I am very satisfied and very grateful to you. I learned an incredible amount.