I also see the blue colour cast as well - easily removable if its not intentional.
Also I might suggest using the highlights and shadows tool and reducing the highlights just a bit to reduce a little of the glare that I see in the shots.
I wonder how the white background was created. If you set bark and snake into a lightbox, how did you make it stay still? Ours would just start enjoying their freedom if we ever tried putting them somewhere outside their terrarium!