One of the great things (and painful things) about having a slight backlog is that when you go to post something, you immediately see everything that is horribly wrong with it. While this is good for learning purposes, it isn't terribly comfortable if you're slightly insecure. Which all artists are, trust me.
I've clearly improved in some ways, but I'm also making some of the same mistakes. I'm happy with my color choices and shading, but it just isn't vibrant enough. In trying to make the skintones natural-ish, I undersaturated them. The contrast is fine, but the lighter skin and the metal bits are washed out and anemic. Annnd the overly precious monster is back. The ogre's faces are actually really cool... but you can't see them, because all that neat detail is on a tiny part of the picture. Oops.
From the WoWiki: Ogres are large, brutish humanoids originally from Draenor. They were one of the last races of Draenor's giants.
Regular ogres and two-headed ogres are not spellcasters; the ogre magi make up the smarter, spellcasting versions of ogres.