Hands are one of the hardest things to draw, but they become much easier when you understand angles, structure, and movement.

Abstract: This tutorial paper provides a review of recent advances in the field of spacecraft rendezvous using model predictive control (MPC), an advanced optimal control strategy based on on-line ...

Man of Steel Reloaded — Master an epic Superman sketch with step-by-step guidance on anatomy, dynamic poses, and superhero ...