The design of this serpentine beast is extremely eye-catching! The highlight, of course, are the extra arms, but what I find unique is the way the body accommodates where the arms attach, creating a plausible and beefy area for the bones those arms would require.
The colors create a pleasantly warm atmosphere, and the blue from the background contrasts it nicely, although the shadows on the stomach in the lower right corner would blend nicer if it had less detail.
In my opinion, the shoulder and neck are receiving the brunt of the image focus, which could be redirected if either the canvas was expanded to the left, or the subject's head was turned so his chin cuts into the center of attention.
Overall, this picture is fascinating, unique, and carries a fresh breath of fantasy reborn! Nicely done!