A lot of it is symmetry. That is both sides mirror each other. The eye can pick up on it and it tells our brain which person would be better to mate with to have offspring that would have a better chance at surviving.
Keep in mind that you won't be a perfect 10 to everyone. If you have a round face, guys with round faces won't find you attractive. It is because their brain is sending a signal that you have too many features they have and are possibly related to them.
I have an elongated face, my jaw line is rather thin and I love love women with round faces. I thought it was more because I am German and Germanic/Russian women have round faces but low and behold it was something different.
You can do a few things to increase your point total a few tenths of a point but ultimately you can't mess with genetics.
Alright you seem like you have the looks thing down.
Now its all about the additude. You need to give off this sexy, cute additude. Be flirty. Guys find girls attractive when, the wear clothes that show off their good features, have a great personality and know how to work the room.
Just have that sexy personality and you'll be fine.
You don't have to change how you look to make yourself more attractive to people. I'm sure you're very attractive right now and you could be an eight or a nine..but how you feel about yourself is holding you back. Did you know that when a woman is confident and she holds her head up and believes in her own beauty it actually make her more attractive to other people? It's just that easy..start finding things that you love about yourself and stop focusing on things that you want to change..you'll find what you see as a fault other people see as unique and beautiful.