You should be made an example of! This is a really great sketchbook #fivestarsfromme. I think the consistancy in your studies shows how focused you are and the improvements are really inspiring. I would definitely be happy if I could achieve this. The environments are great and I'm gonna have a look at some of your links, thanks. The cathedral interior in post 66 is stunning. I personally would not use a ruler when drawing structures, better to have slightly wobbly lines in sketches and artwork. Save the straight edges for technical drawings, axonometrics / isometrics etc. Take care and keep it up.