I realized that I enjoyed drawing with brush pen a lot. They are soft, and allows more versatility in line thickness. Which is why I drew 2 more of these sketches after the Sari one.
I also planned to draw a sketch of Pre-war Blitzwing being enraged, and I drew a sketch yesterday. Unfortunately, my physical condition, plus a need to rush the sketch, cause the expression to look tamed by comparison. Perhaps I would draw a more intense version once I could figure out how to draw it better.