Many people think sketching involves a bunch of doodles that doesn’t make any sense (which is true most of the time) but sketches could actually give you an insight on how the artist work and the thought process behind their final product. Just like the picture above.
Personally, I love to sketch. Whether it’s incoherent or not, on sketchbooks or my lecture notes, I love sketching anything and everything depending on what I feel on that day and what I’m thinking. I also find sketching a way to express and take note of what I’m trying to draw.
Even if your drawing sucks in your opinion, just keep drawing. The more you practice, the more you’ll get better anyways