Sketching and painting have been part of my journaling life for decades, and it does help to remember the lessons from my first art teacher, Mr. Miller, in high school.  He taught me about vanishing points and how to do perspective drawings of landscapes and architecture.  I employ this lesson in many of my journal pages, and I thoroughly enjoy doing this kind of sketch.   If you need a short tutorial on how to draw using a one-point perspective (one vanishing point), check out this excellent YouTube video I found for you:  https://youtu.be/XRrKohWdpeQ