The shadow to the left of the hind leg moves upwards when the tail goes up, looks a tad odd to me :)

I love the personality that you gave the piece! Great job

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 :)

The jawline going to the chin is odd, good colors though!

Incredible, one of my favorites