good question! the way i did was by playing "I spy" i said i spy something purddddy, i spy something i would love to get and know more, i spy something kissible... by then she should know and then go for it! its a really corny way but that how my first kiss went lol
Get the girl alone, be somewhere romantic (if possible) and then get the end of your sentence to be romantic and stare into her eyes and if she stares back then take your right hand and part her hair ,back behind the ear you have your hand on. Then lean in and go to work:)
In order for you to make your first kiss move after you start cuddling, move your face towards his and glance at his lips and eyes often. This is usually a turn on for guys and they will get the idea and kiss you back.