Let me be clear with my requirements first, as they are vital to my story: 1. They are a humanoid race; they have two legs, two arms, two eyes, and their bodies are slightly larger than the average human. 2. They occupy the Earth and have for the past 50 years, thus it's required that they be able to learn and speak human languages, English included. So this limits some creative ability, at least in the mouth area. 3. They do not have any significant military history. When they came to Earth, they actually adopted the use of human firearms because they didn't have any weapons that were comparable. (They've since built their own, albeit based upon human designs) 4. They are capable of individual thought, and feel all the same basic emotions humans can. 5. I know what their skin tone is like, it ranges from tan/copper to light brown/sepia. 6. They can perceive colours in an identical fashion to humans. Ways they differ from humans: - Their hands have 3 fingers with 4 joints (knuckles), and a central thumb that can swivel 360 degrees on a ball joint located on their palm. Unlike humans, whose hands are a mirror image of each other, these aliens have no difference between their left and right hands. - Their eyes are a bit larger than human eyes, egg-shaped. While humans have recessed eye sockets, these aliens do not. Their face is even with their forehead. Areas I'm not sure about: - Foot structure - Leg structure; all I know is they are able to sit in the same chairs as humans, although that doesn't necessarily say much - Hair - humans only have hair because we're mammals, so I don't know if the aliens should or not. I'd prefer they have some sort of head covering/growth, however (or at least some of them). - How females differ from males in physical appearance - Females' role in society - Clothing; what would their clothes look like? I really have no idea. (One idea I had is perhaps scarf-like garments of varying colour and/or size to show social status, but I don't know what to think about that) - Teeth - do they have them, or something else? - Ears - do they have them, or something else? - Basically anything I haven't mentioned So far, they've been relatively human-like, which isn't a bad thing, but I'd like to know how I can better highlight the differences and make them seem more like aliens and not just strange-looking humans.