This is the third in a series of my How to Draw Dinosaur articles for Prehistoric Times Magazine, published by Mike Fredericks (for 25 years as of 2018), and I've been writing for Prehistoric Times since 1996. These are articles 51 to 75. I am a self-taught paleontologist and have used my knowledge of dinosaurs to help artist depict dinosaurs as accurately as possible. I've been actively participating with paleontologists since the 1990's. This volume I tackle neck musculature of theropods, and epaxial muscles of sauropods, bipedal stegosaurs, ammonites (not dinosaurs but I believe they are interesting), swimming dinosaurs, sauropod noses, spikey pachycephalosaurs, the tail of ornithopods, stegosaur plates and tail spikes, cartilage, face fighting ceratopians, Oviraptorids, and the tail of theropods. It is my desire, that this series, will help not only the professionals, but the lay person in understanding how dinosaurs lived and looked.