how can i slowly become popular on fb?

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i just realized im like a total loser and im so embarrassed and i want to get new friends and a new everything ima work on my looks but i really just need new pictures, a timeline, and i need to start posting some stuff i dont want anymore ppl to notice that im a dork its so embarrassing i want to make some changes this summer and when i get to school talk to cool people..i know this is really shallow but im embarrassed to b seen with my friends their reallly weird and awkward to be around like some of them are posers or just really weird or immature. i dont wanna b seen like that anymore and i just reaalized towards the end of the year decided i want a change. its just im not the type to call attention and i dont want people to judge me and im shy and i hate it i need to get over it. most of all im just extremly embarrassed of myself, i wanna do something different. the main thing is i dont want people to think im trying too hard (thats what happened to one of my friends and no one likes her but i dont think she knows) i really need some tips and advice on how i can do this thanks(: