Well, everyone is writing novels above me, but I have quite a simple opinion on this topic xD:
Just do what you want.
After all, it comes down to your character and what you like/enjoy about them, so really, no one else should have a say in it, considering it is your character and your's alone. Mass Markings, although not official to the game, give a player more options to make their character unique and I see nothing wrong about them. And neither do I see the official game markings as "noobish" or "illiterate" as they're all beautifully made markings anyways.