33% Fluttershy, I love animals in general (nature as well), and I can also be shy to somepony (or ponies) I don't know (the only exception (here in Canada at least (not to sure about other countries) (or it's just me) is when you notice somepony is doing something that you also have interest in and spark a conversation based on the interest).
33% Pinkie Pie, I love parties depending on what type of party it is (LAN parties and video game (including tournament) parties are my most favourite type). I do have a crazy and quirky personality. And I am very sociable when a favourite interest of mine sparks up the conversation. I am also outgoing and open-minded.
33% Rarity, I am generous at times, I am willing to help anypony who needs the help (mostly depends on what they need help for) and I somewhat do care about how I look (mostly with dress clothes (suits, tuxedos, stuff like that). I am also very creative when it comes to anything of my interest (especially music). I tend to be a perfectionist and I like things to be organized. And I do get annoyed by my younger brothers when I don't want to be bothered.
And the 1% is Rainbow Dash, since I do have a competitive edge.
Update:
I recently took the Pony Personality Test, and some of my predictions were pretty close. http://www.bronyland.com/pony-personality-test/?q=MDQ5N3wxMTAyOTI4