π¨ Thumbnail Sketches
While thumbnail sketches can be done in a sketchbook, I have plenty of old white business cards to sketch on the back.
Itβs a good practice to look at composition and contrasting shapes. What looks interesting before color or detail are added.
Use it as a reference to stay on focus.
Here are some great examples:
https://artprof.org/learn/tutorials-media/drawing/thumbnail-sketches/