heres a tip if your that desperate for chicks and are int he mood where u think uc ant seem to do anything right:
reinvent yourself for a bit. find a girl who doesnt know you (a new one, thats the word! haha) and instead of trying to do all this stuff right, just pretend your not yourself. hold yourself straight and proud, make comments with witty confidence, and generally act as if there is an awkward moment or she doesnt understand something then its HER fault.
not AT ALL in a bad, arrogant way. that is even worse then being afraid of sex or whatever. there is a fine line, but if u play it right then it works. it may feel completely foreign, but STICK TO IT. even if u fail the first few times, dont just give in. you cant expect to get what u want if u cant make enough effort yourself.
obviously once you have a temporary new persona, getting towards sex should flow naturally; pretend its something that you always do. if u screw up or do something abnormal, again, remember that its her fault for not being cool enough to know whats up
as this works and you continue to do it, you will find that you can gradually sneak in bits of your true persona into your made up one, gradually. and after time, you will be back to your old persona, just you will still have all the good stuff remaining, like conifdence and charm and a dick with some experience.
i myself am 17 and pretty ugly:
http://usera.imagecave.com/moojuice/formal.jpg
(note this is my FORMAL so im looking my absolute damn best, cant really see the true ugly but i assure u its there)
however i find that ive just gotten to know how to talk to girls, not in your typical fake charming way, by saying all the right stuff at the right times etc, but just by being an interesting and fun and easygoing person to be with. as a result i always end up with girls above my level, who are actually cool too. (the bimbos just want someone with all the right lines/with a great face and body)