I'm sure your building would look great, i love that first image you posted! i kinda struggle with straight lines as well, but i always draw free hand. Even if they're not perfect, i don't mind haha.
I would tend to agree with you about drawing stoned, but with this particular piece after a heady sativa, all the cross-hatched lines start to get really trippy. Makes me get distracted and loose my focus on the intricacy!
I like free hand better, too.
I seem stuck, literally,in a black and white phase, even though I have all I could need , to break that phase.........the time wilk come, amd I'll go back to my watercolors, or, my soft art colored pencils..........but right now , it seems, I can't remove my mind from black/white genre .
When I get back that mindset, to use some color, I'll post some...........found a cool pic. , online , of birds, that I'de like to give a shot to. I love doing nature.........animals , trees, that stuff. I really love dead trees w/lichen or fungi , on the bark. Gnarly type things, I suppose, really are cool to draw, imo ........have fun, and thanks for the sharing.........<3