Thanks for the advise! I didn't want to make the scene too dark by making the moon the light source so I made it in front of him, I'm going to add a reflection on the ruined walls and add a shadow onto his arm like you suggested, and I think he may look out of proportion because of the large beard and his legs are also crossed, showing only a small portion of the leg. Thanks though :)
Certainly a million times better than my second pixel art piece.
I'm wondering where the light source is. It's natural to think that the moon would cast some light, but everything suggests a light source above and in front of your Olympian. At the very least, I think the moonlight should reflect off the ruined walls. The whole piece would probably have much more atmosphere if the moon was the primary light source, but even as it is right now, I would think that the head would cast more of a shadow on his chest and right shoulder.
And although I'm not very good with anatomy, I think his limbs look a bit short (or his head a bit too large)
Still much better than what I could do though.
Nice preview it is.