hello iano92
first of all, DONT CHANGE YOUR SELF, use yourself to gain game! you dont have to be a douchebag to be a PUA, there are lots of nice guys in here, the different between you and them is that they have decided not to take all that crap girls lay on them.
just go out to the nearest mall, bar, campus, gym or where ever there are girls, then work up to them and just start talking, at the end of the conversation ask for their number... it actually isnt that difficult, and you will gain a lot of coinfedence... if you are to shy look up some rutines and such on the web...
good luck, and remember you can always ask for help in here
and another thing, remember a girl never wakes up in the morning thinking to herself "i wish im not going to meet my dream guy today", so if you walk up to a girl and compliment something about her, if she is going to reject you she is almost always going to do it in a nice way... and what is the worst thing that can happind to you?
look on the bright side she will be in a better mood, because she got complimentet
