Ask a girl who already likes you out! That gives you effectively
80% chance to suceed!
Na jk, there's no such thing lar. Technique and diplomacy is only
second to timing. Not even if a real player can teach you how to
charm a girl to surrender her bra to you can you get a girl to go
out with you if you fuck up the timing.
What's the correct "timing" then? It's intangible, you can't define
it as a period of time or with certain "symtomns". The only way to
know if it's the right time is to go with the "feel" of things.
Trust your manly gut instinct more and really "FEEL" if it's the
right time inside you. This won't be 100% accurate initially but as
you continue to try asking people out, continue to make new friends
etc you hone this instinct and you begin to develop an "awareness"
for the situation between two people and the "atmosphere". "Nuff
said. You should know what i mean. People science is 50% art &
50% technichal. You're talking about the art part, go use your
heart & gut. It doesnt matter how as long as you dont interject
with vulgarities or the like. No lame jokes to cover up your
nevourness and no dumb statements like commenting about homework or
the weather. Look someone straight in the eye, smile & be
sincere.
If girls even percieve 0.001% wussyness in you when you're asking
her out you'd be sure that your chances are way down, unless she
already has a colossal crush on you. So please, don't worry bout
technique. Worry about not fucking up the timing and not betraying
signs of nervousness & desperation. "Women can spell
desperation miles away".
Logic is for the world. Impulze & his buddies go with pure gut
instincts. And their sexiness 
Care to join the gang?