More often than not I consider a subject to draw then attempt to seek out some inspiration on Pinterest. I don’t have a committed board for that – apart from portraits (I've a board identified as “Drawing References” which I usually use for inspiration) Architectural Drawings: Use these techniques https://inkdrawingforbeginners11739.wizzardsblog.com/37030926/the-definitive-guide-to-how-to-draw-with-ink-pens