I guess that I am more like Willow than Tara.
Willow characteristics that I share:
~ school- always do the HW/reading, studying, very high grades, etc.
~ case and point ('Faith, Hope, Trick'- "What if they changed the rules and are lying in wait to throw me in detention??" OMG. I think I have actually said something to that effect before...)
~ kind of a spaz with some things
~ computers (always on the computer during free time)
~ built more like Willow's body type than Tara's
~ green eyes
~ knowledge girl on lots of factual stuff
~ don't make friends easily
~ babble sometimes
~ no singing (kinda like Aly)
~ got picked on in school for my nerd-type character
~ happier in college than in high school
I do have a hair color similar to Tara's though. Also, I'm an art person (she was taking at least one art class at UCSD).
Willow personality/quirks definitely match more with me, though.