My advice is to chillllll out!! you are thinking way to linear..
Ofcours you can open her, neg her, neg her and neg her again, say something funny, fluff, kino etc.., but i think you are missing the whole point of being relaxed.. they feel you are tensed and that you're running out of stuff and from that moment their tests will be more intense 'til you leave her alone. Those steps your a taking are not bad, but without good bodylanguage and a positive, dominant attitude, these things won't work as they should be..
Try to get into that zone that everything flows.. warm up in clubs, don't care about the outcome.. picking up girls is all about chemistry and you need to create that chemistry between you and that girl. When you have it, things will flow and sex is a natural result and not a big deal..
i guess my tip to you is go out a lot more, talk to a lot more girls, you are getting stuck because you are not relaxed around them.. it'll come, don't worry.. in the end you'll be the king of the club
and all girls will feel that..