The values look good, except the hand on the far side looks tacked onto the ground. It looks like it is just placed in front of trees/bushes/a boulder that is there yet washed out in the value.
The foreground trees seem to be swaying toward the direction the horn's wind is blowing, but they probably would not be affected in that direction where they are.
The end of the horn looks like it is slightly pointed to the left of where that building is. Try making it look more straight toward the builing at the rim area.
Make sure you reference shoulder blade and middle back areas more to see if the anatomy (musculature) "makes sense" for four arms. I am not saying it definitely looks weird, but perhaps it does to others more understanding of anatomy. Get reference of a person looking forward like the creature is in that same pose. The muscles around the neck seem to be missing as if the head connects below the shoulder blades.
