I'm not a professional, but I use two important triks/routines for this.
Kino progression:
Initiate kino right of the start, so it won't become wierd later on. The first kinos should not be sexual, but make sure to spike some form of emotion. When progressing you can use IOI to let you know how to progress. Kino should ideally be used as a reward for the girl, when she is showing interest. If you wanna go deaper into this, there are alot of rutines to follow on the web.
Eye contact:
When the conversation turns more personal, keeping eye-contact is very important. Do not let her get distracted by the things around you. Keeping eye contact also let you read her IOIs easier. I often let the conversation turn silent for 4-5 sec, look at her and give her a smile. How she responds to this, lets you know how much you can progress.
Hope it helps
