I think for most girls, the thing that can make a guy go from a 5 to a 7 in their books, is a good sense of humour. A guy who can laugh at himself, take a joke, make jokes and have a good time, is automatically liked. Guys who are serious or constant clowns usually just annoy everyone around them, including other guys.
A good sense of humour is a must. It doesn't mean you have to be a stand up comedian but like I said, the ability to take a joke and just laugh is a good thing.
I'm not sure what you mean by a "better person" but if you're a good person, you're a good person. At that point, it's all about finding someone you're compatible with and less about trying to impress girls you're otherwise incompatible with.
honestly I look for someone who will always be faithful, back me up, be with me through thick and thin, be open minded and be madly in love with me, and is open about talking about sex and compliments me on my body :) ..for the outside I look for someone taller than me which shouldn't be hard because I'm 5'2'' ha ha and I love redheads, black hair, or light brown, jewish boys and a strong enough body to hangle me, throw me around, wrestle and protect me :)