Heh... I like how might you make him look.

Looks absolutely amazing
Not only in terms of how beautiful his scales and his overall appearance are with all these mighty body, bloody fins and smoke dark gray colors but also how playful and elegant he moves and how genuinely excited he is in an expression... almost deviously so
He knows that the deer's struggle is futile but still plays a bit with it. Just like a big and scaly cat
AWESOME art!