The best response concerning what the fossil skulls tell us about hominin evolution is: "The nose became more prominent as hominins evolved."
Typically, studies of the fossil record indicate that as hominins evolved, certain facial features, including the nose, became more pronounced. Other statements, such as those about height or the shape of skulls, may vary depending on specific hominin species, but the trend of nasal prominence is a more consistent observation in hominin evolution.