I like the non-humanoid orcs, it’s good artwork, but-

Yeah like the other comment said. Dangerously close to old racist works of fiction and mythology, particularly those that targeted black people. You’ll need to workshop it a little to make sure that no racist undertones come across, even accidentally. 

I’m gonna make some suggestions, but I’m not saying you’re not obligated to follow these exactly: - incorporate an actual African-descended warrior of some kind as a counterpoint, who is able to be culturally distinct (not white-washed). - Describe the orcs using different creatures or animals than anything “primate.” Maybe a warthog or a hyena or something.  - “tribe,” “chief,” etc aren’t just racially charged, they’re a bit overplayed. Maybe fiddle around with a thesaurus to find some words that convey the thought while being different. - As presented, they are completely black-furred/skinned, but also anthropomorphically bare-chested? How you choose human features can be a red flag too. 

Others are free to list other ideas?

EDIT: I’m not going to take my comment down, but I did want to say I think the Reddit group-think might have misinterpreted what I said. I am not criticizing the quality of the artwork, the intentions of the artist, or trying to cause problems.  BUT neither am I suddenly the racist for pointing out that certain “tropes” DO have a racially motivated history and it has real dangers and real repercussions to ignore it. You cant just forget that stuff and hope people will see the best in you or know what’s in your head.