Guys - bigger than me (I'm small so that's easy), isn't too angry or high-strung as a person, preferably has facial hair, and even though it's common or boring to most people I really like dark hair and dark eyes.
Confidence. I can't say that enough. I like when people are secure of who they are, are sociable, and have their life together. I like people with a drive and positivity.
Looks wise I go for mixed girls/boys. I LOVE curly hair, so that's like a major turn on. And personality, I like girls who are awkward, shy, sweet, etc while for guys I tend to go for those who are, strong, sweet, funny and just a little touch of being an asshole.