Right, forget about picking up girls for at least a month! Now just go to a popular social place and talk to anyone, (Even guys) and you will realise that it's not too scary. You will gain friends and begin to know more people thus improving your social skills! When your talking to girls, don't try to pull them, just have short conversations with them about anything and soon you will realise girls are human too and that they are easy to talk to. Make sure everytime you go out to the pub etc you meet at least 3 new people, and know them by name if you can, dosn't matter too much though if you don't know names.
once you have achieved this, then you can start to try and pull girls, but don't do it alone when you 1st begin, go over a game plan with a friend and have them wingman you but get them to slowly leave the conversation so you have isolated them. you should feel more relaxed and because you have talked to girls before but not in a sexual way, when a girl does approach you, you wont panick as much because you will know what to talk about
Go into everything happily, no one will reject a happy person unless they are miserable themselves