almost ten years of real world swordsmanship, stage fighting, historical longsword, and swordsmith apprentice/researcher for about 4 years now... Sometimes it's not what your character is, but how you write it... Your character can say they are a mega swordsman, but it doesn't mean you write it believably (though you may, I don't know ya).
It's something I like to show people how to do so they're not describing these AWESOME moves in RP and it's totally impractical... Like a flurry of blows after a big ole thrust... Bad idea, a thrust is *really* easy to block or dodge if the recipient is paying attention and has good reflexes, and then your post describing you awesome flurry of blows is.... Wasted.
Things like that, that honestly not even modern military training teaches you... Now, unarmed and gun combat, i'm not quite as good at. But armed melee I'm pretty adept at.