Oh, this will be fun! Great idea!
I would be Sonia Ravynnrose. I am in Slytherin. I have long, very thick, lush black hair falling to my mid-back. My eyes are a vibrant copper, accentuated with intense brows, high cheekbones, a slender nose and full lips. I am tall for my age, and slim, but strong. I am quiet and very aloof, but not afraid to stand my ground. I don't seek trouble and don't pick on people, but I can be blunt and snarky if addressed, and am viewed as intimidating 或者 unapproachable 由 most of my classmates, but also highly respected. If 你 are lucky enough to become close to me, 你 will, however, know that I'm really very shy and timid. I don't have a boyfriend (Though I drool on Snape and thrive on his detentions, of which I don't get a lot, being Slytherin) because I don't allow anyone to get to know me, but I'd like to think a few Slytherins secretly admire me for my mysterious flair. Inwardly, I am a very sensitive and empathetic person, and I also strive for accuracy and routine in my life, making me a perfectionist. I would probably have only one companion, and we would have a very close and inseparable friendship.
My wand would be made of ash. Ash represents sacrifice, sensitivity and higher awareness. I have an affinity with this type of 树 and I think the symbolism fits with me well. However, using a Celtic calendar, as JKR did to assign wand woods, I would really have Ivy... but since my character is fictional and obviously not me, we'll say she was born in mid-Feb to mid-Mar, yes? Anyway, Dragon heartstring would be the core. It would be 12" and very swishy, pliable. Patronus is a panther.
Her birthday is February 21st, since Alan Rickman's birthday so beautifully fell into the required boundaries! :D This makes her a Pisces, and numerologically a 2. These sites describe the way these facts influence her personality perfectly:
link link O.W.L. Examination
(E) Ancient Runes - Exceeds Expectations
(A) Apparition - Acceptable
(T) Arithmancy - Troll
(A) Astronomy - Acceptable
(O) Care of Magical Creatures - Outstanding
(E) Charms - Exceeds Expectations
(O) Defense Against the Dark Arts - Outstanding
(O) Divination - Outstanding
(P) Herbology - Poor
(A) History of Magic - Acceptable
(P) Flying - Poor
(A) Muggle Studies - Acceptable
(D) Potions - Dreadful
(A) Transfiguration - Acceptable