not bad, in fect i think it a pretty cool idea, you should have payed more attention to how a lion looks though, his mane isn’t supposed to be just more hair on top of his head, he should probably bend a little over, his fangs/claws should be visible, his eyes should look like those of a lion, his nose can still be a bit wider. Also i wouldn’t hide hios tail that much, gave him a less “modern” axe, i suppose a very comprehensive, but primitive african axe would do better. Last but not least, the armor looks weird, probably to heavy, and not very lion-like.
It needs work, so i suppose you should work a little more on them, and cause you wanted really warm colors, i think much more red and yellow would give it a savanne like feel.