The Nion Character sketch

I am a professional screenwriter and author. So far I have written three novels and five screenplays. I am looking for possible cover art and concept sketches for "The Nion", who are an alien race of antagonists in the current novel I am writing. Following are exerts from the novel for general descriptions. The Nion; Main race. They were tall enough that they had to crouch down to enter through the doorway. They wore gleaming black armor, smooth and sleek. Their faces were completely covered by an armored mask that had a glassy, reflective covering. Their long limbs jointed like a humans but thinner by proportion. The joints of their legs bent backwards like an ostrich. It had two eyes, just like a human’s but they were on either side of it head like a bird’s. The face was almost reptilian. Nostrils on each side of an elongated, bridged nose puffed with effort as it tried to breathe. The eyes were closed, so Riley pulled the lids open. It had double lids that met in the center of an eye that had a flat iris running horizontally. Its skin was smooth to the touch and cool. But that could be because it is dying. Surprising that its mouth has lips. I would not think to see that on a reptilian based creature. “Interesting.” Its neck was thick with muscles and bone but Riley could clearly see the joints. The Nion Ships The ship was large, painted night black. If not for some lights in the vessel it would have been hard to make out in the darker blackness of space. Stars in the background blinked out as it passed in front of them. Lights on the curved forward section made it look like the face of demon. It had a round ‘mouth’ that could have been a weapon or an entrance to an internal docking port. Large and small domes fixed all over it made it appear as though it had some black pustule disease. There were even domes on top of domes.