Do it in a fun way :
Buy two presents :
- 1st present : the worst piece of cr*p you can think of. The gift that will make you look like the utmost loser.
- 2nd present : dig into what you know of her, what she likes (how could we know here ?!)
Scenario :
Meet her and give her gift number 1 while keeping your face as serious as possible (I guess I don't need to teach
you the British humor, you could teach it to me).
Watch the reaction, and when you feel it's the right time : give her the real gift.
Optional : then kiss her