Hi st0ven. I really like the demon, however a few points:

Sorry for rough edit.
1. I don't think the whip being tied around the demon's forearm works at all.
2. That area where arm, wing, horn and whip all intersect is a bit of a clusterfuck.
3. The actual gesture of the high arm is the antithesis of intimidating. I'm not sure the 'invisible oranges' gesture I edited in a good enough change but it might give you a few ideas.
4. Any particular reason for no genitals? If it's a matter of being inoffensive, I'd give him some clothing or ornamental armor or something *edit = or even just some hellsmoke in front of his crotch, anything.
5. The whole pose looks a bit like a rockstar holding a microphone, is this intentional? If not you could amend it a lot just by changing the grip hand's gesture on the whip.