He's , Mixed it's from this Mod http://steamcommunity.com/sharedfiles/filedetails/?id=7553
Martial arts is just a general term for organized ability to fight and kill, in this case it involves a sword.
It's basically meant to indicate that he knows "a little bit" of restoration magice but he is by no means a mage.
Guards fine, like it says he's not a master swordsman and he has little to no Combat experiance.
Still, you need to re-write the char-sheet to include a complete skill-list. It's there for a reason
I read he studied a bit of smithing as well, that needs to be there as well.
As for your characters race, he can only ever truly be one race. However, he can have very subtle features of other races. So basically, name one of the four human races which his mother was, and then one whihc had father was if you want him to look a bit like him.