This might be had for you to accept but the ONLY way to get her is to embrace the idea that you can lose her and it's ok. Because as long as you will be thinking "how do I do this" and "how do I do that to her" you will 99% mess up. I tell this to guys all the time. You can not control what she will do or say, you can only control what you will do and say and therefore you can only maximize your chance of success by controlling yourself. Now to be more practical. There are 3 main steps you can do to improve yourself.

1) Recognize that this can fail or succeed and be ready for both.
2) Be not needy. This is achieved by being your true self around the girl and having values. Now, most guys do this unnaturally like mysteries neg or something like that. Instead, this should only be done when needed. For example a girl tells you lets go to watch "Twilight(movie)" tonight (and lets say you hate that movie) now most guys would think "oh wow here is my opportunity to be with a super hot girl maybe we'll even make out after the movie. I'll go even though I hate this movie." and he would go to the move and compromise on the movie because he's desperate to be with the girl and is afraid if he says or proposes something else he'll miss the opportunity. This is the response 99% of the guys would give to the girl. On the other hand non-needy guys would reply otherwise they would say it how it is " I don't like "Twilight" we should watch something else. This is not the response a regular girl gets from guys so she'll be stunned because you display confidence and show that you don't mind if you miss your opportunity with her. This is very attractive. The same thing is with kissing like in your case. Call it the way it is. When you wanna kiss her go for it.

3) Putting yourself 100% in. Meaning, don't be afraid of what she or anybody else will think of you. Because what you think of yourself is the way other people will think of you.

Good luck!

- Amazing Art -