For anyone interested in how I work here's a short video demonstrating my process. Not the fanciest of videos I know but hopefully that will improve with time. I don't always work this way but for detailed interiors it's my go to method. As a byproduct of needing a video URL to upload this video here, I now have a Youtube account where I'll likely be uploading more videos like this and possibly even recording of my drawings in the future. Can't promise too much as of right now though. Hope you like it!