I'm sorry ! English is not my native language, so I think I had not understood your sentence correctly. And here on reddit a lot of people think I'm lying when I say freehand drawing, and then it seems like they want to fight. Actually, drawing like this in the smaller size is simpler. when I draw a building in a large size, I make some main lines in pencil using a ruler, and then I draw with the pen over the pencil and without a ruler