When should I go in for a first kiss?

I have been dating this woman and I really like her. We have been on two dates so far and they have both been amazing. We are planning a third date and I want to kiss her, but I also don't want to try to kiss her, get shot down, and ruin everything. Should I ask to kiss her, or should I just go for it?
When should I go in for a first kiss?
Post Opinion