Quite big
This is beautiful, good job.
In my opinion, it would be sexier, if his eyes weren't that agressive.
But, still, heck piece of art ;)
9.5/10
For the look and drawing style you were going for I'd say this is perfect.
10/10
Very cute and nice but would be better with Spanish mustache 9.9/10
Also add hair by chance
It's because he used deviant art as the hosting site, and probably put it under copyright protection, nothing wrong with that.
And there isn't anything wrong with mirroring. Sometimes things look better when everything is clean and symmetrical.