Nice model! It looks like it was inspired by the Blackrock Orcs from WoW. If I could make some suggestions, I would recommend changing the skin tone to be more ashen, similar to this
one. Also, try to emphasize their
clan symbol more rather than the Horde symbol—though that depends on the timeline you're following, whether it's before or after the Second War.
You could also address some clipping issues. For example, try moving the right pauldron slightly up. For the left pauldron, you could create a bone parented to the left shoulder and adjust it slightly during animations. Additionally, you can delete the skin that appears under the armor to avoid overlapping problems.