Hey!
I also like your Diagram!
I think the drawings look very clean and I like that your edges and details look sharp and crisp. (I have been drawing just a little longer than you, my diagrams tend to look a little "mushy" sometimes when they have too much detail, I like that yours look often so clear).
The only kind of "critic" I would like to add goes in a similar direction than Koops':
The drawings tend to look a bit flat. A little bit more shading and some harsher contrast between the sunny and the shady sides of the buildings could improve some of the diagrams. But apart from that, everything looks quite fine!
Keep up the good work!
