The 2nd one because the first one is way too busy.
I agree with the Second
Just a suggestion: You don't need your name on both sides, it takes up too much real estate on the front that you could use to display 'Concept Art' 'Modelling' and 'Animation' a little more distinctively.
Front: the second picture much better - just remove the bottom line with your name/ surname on it.The back looks perfect. Clean & professional.