Based on your (natural) appearance, which of the major houses would you be in? Or would you be from across the Narrow Sea?
What about based on personality?
Baratheon: Black hair blue eyes
Lannister: Blonde hair, green eyes
Martell: Olive/brown skin, black hair, brown eyes
Stark: Dark brown hair, grey eyes
Targaryen: Silver-white hair, violet eyes (I'm pretty sure that's no one)
Tully: Red/auburn hair, blue eyes
Tyrell: Brown (usually curly) hair, brown eyes
I couldn't find any info about House Arryn's appearance.
I'd be a Tyrell because I have both brown curly hair and (well, at least everyone thinks they look brown even though they're dark green) eyes.
Personality-wise, I like to think I'd be a Tyrell. I love me some Tyrells.