When you sketchnote, you’re using your visual language and your written language together to communicate meaning. And you can unite these two languages even more smoothly by overlapping and intertwining them.
Overlapping and intertwining are completely optional. They’re just more nuanced ways of grouping elements and information without keeping everything individual/static. In other words, they help bring your sketchnote to life.
These techniques can give you permission not to draw a whole image. You can hide part of it behind other words or graphics like I did in the examples below. It’s also a great way to save space and create a unified look.