tbh most of the time when ive kissed someone ive not verbalised it, but it really depends. I have asked a few people but it was because there wasnt a 'moment' where we were both obviously wanting to kiss each other, so i just come straight out with it when we were talking (have kiss closed all that i have asked btw

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You will know when the 'moment' is right, just remember styles routine where he smells their purfume, pulls hair, etc.
What i'd say is maybe whisper something in her ear too (nothing perverted!!), this gets her used to being close to her, your breathe can turn her one when its on her neck and also the breathe going in her ear will tickle alittle bit making her feel all funny (but in a really gud way), when your that close with her (and its not random) you can then maybe give her a little peck passionatly on the cheek near the ear, then as your talking you can be real close to her looking into her eyes, then down to her mouth (check mysterys triangle look thing where you look at the left eye, then the right eye then the lips, and repeat a few times, but all of this you have to do SLOWLY!).
It will just start to come naturally and before you know it you will both be kissing.
I believe you should never give anyone a 'yes/no' question (where you ask a question that promotes only a yes/no answer), try maybe even using Mysterys 'stick your tongue out' routine!
Remember, kissing someone is easy, dont stress too much about it, just make sure you getting lots of
kino with the both of you because this builds comfort and a connection. You NEED both before you can kiss close!