I worked on this for quite a long time. I wanted to make sure that the orcs visually came across as foul and frightening while keeping a clear silhouette. There really isn’t all that much information on their physical appearance in the books, but Frodo and Sam do describe some orc characteristics after reuniting in the Tower of Cirith Ungol: orcs are bow-legged, have long arms that nearly reach the floor, and have both claws and fangs. Generally, they’re taller than hobbits.