Well first you can take a crap load of makeup and cover your face like a clown, next get a shirt that's about 2 sizes too small and stuff your bra. That'll keep da boyz coming. (LOL JK!!!) there's no way to make yourself more attractive haha just have a nice personality and don't worry about what you look like:)
To who?... Beauty is in the eye of the beholder... I like how it looks when someone looks like they just got out of bed... Seems more real... But the next guy mightlike it more when your showered an your hair is brushed and you have fitting cloths...
I'm sure you're already beautiful. But make up is your best friend! Don't overload it to the point where you look like a crayon raped your face. Do what looks best to emphasize your features. Look up tips from make up tutorials. Good luck :)
Attraction is a curious thing. If what you look like is what you want to build your attractiveness on, you will lose other parts that other people think is important. Like the way you act. Converse. Stuff like that. If you simply want to be attractive for your own sake. Kudos! If you do it to please someone else, you will find that being simply physically attractive will not be enough.
By looking like me? Lol I'm jk,... Just be yourself that's the best way to be attractive, also show others how confident you are stand up tall when you walk and that girl or guy will feel your positive vibe you give out and then may find you attractive, but you have to feel it deep in your heart first I promise it will work just give it sometime :)
There's a theory that people can make up for a lack of physical attraction with other things and that works as a substitute when attracting a mate. Like when you seen really rich old guys with money going out with models. And why those model types don't have the best personalities or aren't the most colorful crayons in the box, they get by on looks and don't need anything else. So be really good at something like acting, writing, painting, making money, whatever it is. Hopefully it's something you like to do too.