My only issue with this drawing is... (I am not a background artist) ... The snake blends into the background, rather than looking like a character in itself. I think it's just it's eyes... it blends in because of the artstyle used on him. The character herself looks amazing.
Other than that, everything else is perfect! I enjoy the mix between manga and this weird splotch style coloring.
Enjoy your day... or night... or WHENEVER, friend!