Don't try. Who said anything about trying?

Just do it.

*hint* - Practice giving her the eye with a pause in convo, the one that says I'm going to kiss you now. Learn to read the subtle reaction she'll give you back. Quite often she says 'not yet' with her eyes, so just do it again later until a 'yes' eyes is given (aka eyes, nose, mouth triangle viewing). Naturally, this works best when tightly holding her around the waist.

P.S - There are approx 29,000 people living in Norwich between the age of 16-24. Assuming you're 100% straight (big assumption) and you have some standards (again, debatable), that makes around 8 - 9,000 kissable girls.

Good luck.