I don't know why, but thieves always make such a refreshing gameplay for me. Even though I usually prefer warriors.
Anyway.
I already have it in my mind.
Name: Eldárwen
Race:
Wood Elf, I think. Not sure yet.
Skills:
Sneaking
one-handed
light armor
speech
Combat style:
One blade, fits the thief.

Weapon choice:
Nightingale Blade
Armor choice:
Nightingale armor
Personality:
Careless
Silent
Rather arrogant, though that changes later.
Factions:
Thieves guild
Imperials or Stormcloaks (I usually go Stormcloak for Wood Elves, but Imperials tend to be more wealthy, which attracts my thief. Not sure yet.)
I chose not to do the Dark Brotherhood.
Morale:
She'll start out like a regular thief, no goodie. But eventually becomes a Robin Hood type of character.
Spoiler
Shame the people in Riften can't forgive you by paying the double back or something. Oh well.