"That's easy for you to say. You can draw really good circles, can't you?" Nope! Mine are crummy too. "Huh? But you said …" Two things. First, drawing circles freehand isn't "simple". It's really hard! You can't just use your wrist or your elbow: It takes a ridiculous amount of coordination between a whole buncha different arm muscles. We're just not built for it! "Th-then how can I …"