My design was a basic Alien Warrior with spikes running along its head rather then ridges, and predalien mandibles. its still black, except for its underbelly, which is a dark tan color. Its also a bit bigger, but not by much. Its stronger then a normal alien, though.
By the way, I DO picture my design to have the mandibles fold together like a normal predator. A Y-ish shape. The top form a V-like shape, while the bottom are straight and rest on the top of the top mandibles.